81643. AAAS.   Science.   American Association for the Advancement of Science, 1984, Science, Volume 224, Number 4649.   Softbound, usual signs of use, text in very good condition.    $5.00

81644. AAAS.   Science.   American Association for the Advancement of Science, 1984, Science, Volume 224, Number 4650.   Softbound, usual signs of use, text in very good condition.    $5.00

81645. AAAS.   Science.   American Association for the Advancement of Science, 1984, Science, Volume 224, Number 4651.   Softbound, usual signs of use, text in very good condition.    $5.00

81675. AAAS.   Science.   American Association for the Advancement of Science, 1984, Science, Volume 226, Number 4681.   Softbound, usual signs of use, text in very good condition.    $5.00

81633. AAAS.   Science.   American Association for the Advancement of Science, 1984, Science, Volume 223, Number 4639.   Softbound, usual signs of use, text in very good condition.    $5.00

81714. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 229, Number 4718.   Softbound, usual signs of use, text in very good condition.    $5.00

81673. AAAS.   Science.   American Association for the Advancement of Science, 1984, Science, Volume 226, Number 4679.   Softbound, usual signs of use, text in very good condition.    $5.00

81702. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 228, Number 4707.   Softbound, usual signs of use, text in very good condition.    $5.00

81703. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 229, Number 4708.   Softbound, usual signs of use, text in very good condition.    $5.00

81704. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 229, Number 4709.   Softbound, usual signs of use, text in very good condition.    $5.00

81705. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 229, Number 4710.   Softbound, usual signs of use, text in very good condition.    $5.00

81706. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 229, Number 4711.   Softbound, usual signs of use, text in very good condition.    $5.00

81707. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 229, Number 4712.   Softbound, usual signs of use, text in very good condition.    $5.00

81708. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 229, Number 4713.   Softbound, usual signs of use, text in very good condition.    $5.00

81709. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 229, Number 4714.   Softbound, usual signs of use, text in very good condition.    $5.00

81710. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 229, Number 4715.   Softbound, usual signs of use, text in very good condition.    $5.00

81700. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 228, Number 4705.   Softbound, usual signs of use, text in very good condition.    $5.00

81713. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 229, Number 4717.   Softbound, usual signs of use, text in very good condition.    $5.00

81699. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 228, Number 4704.   Softbound, usual signs of use, text in very good condition.    $5.00

81715. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 229, Number 4719.   Softbound, moisture stains, good minus condition.    $1.00

81716. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 230, Number 4721.   Softbound, usual signs of use, text in very good condition.    $5.00

81717. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 230, Number 4721.   Softbound, usual signs of use, text in very good condition.    $5.00

81718. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 230, Number 4722.   Softbound, usual signs of use, text in very good condition.    $5.00

81719. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 230, Number 4723.   Softbound, usual signs of use, text in very good condition.    $5.00

81720. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 230, Number 4724.   Softbound, usual signs of use, text in very good condition.    $5.00

81721. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 230, Number 4725.   Softbound, usual signs of use, text in very good condition.    $5.00

81722. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 230, Number 4726.   Softbound, usual signs of use, text in very good condition.    $5.00

81723. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 230, Number 4727.   Softbound, usual signs of use, text in very good condition.    $5.00

81322. AAAS.   Science.   American Association for the Advancement of Science, 1998, Science, Volume 281, Number 5383.   Softbound, xlib, minor signs of use, text in very good condition.    $5.00

81711. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 229, Number 4716.   Softbound, usual signs of use, text in very good condition.    $5.00

81688. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 227, Number 4693.   Softbound, usual signs of use, text in very good condition.    $5.00

81725. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 230, Number 4729.   Softbound, usual signs of use, text in very good condition.    $5.00

81676. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 227, Number 4682.   Softbound, usual signs of use, text in very good condition.    $5.00

81677. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 227, Number 4683.   Softbound, usual signs of use, text in very good condition.    $5.00

81678. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 227, Number 4684.   Softbound, usual signs of use, text in very good condition.    $5.00

81679. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 227, Number 4685.   Softbound, usual signs of use, text in very good condition.    $5.00

81680. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 227, Number 4686.   Softbound, usual signs of use, text in very good condition.    $5.00

81681. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 227, Number 4687.   Softbound, usual signs of use, text in very good condition.    $5.00

81682. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 227, Number 4688.   Softbound, usual signs of use, text in very good condition.    $5.00

81683. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 227, Number 4689.   Softbound, usual signs of use, text in very good condition.    $5.00

81684. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 227, Number 4690.   Softbound, usual signs of use, text in very good condition.    $5.00

81701. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 228, Number 4706.   Softbound, usual signs of use, text in very good condition.    $5.00

81687. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 227, Number 4692.   Softbound, usual signs of use, text in very good condition.    $5.00

81674. AAAS.   Science.   American Association for the Advancement of Science, 1984, Science, Volume 226, Number 4680.   Softbound, usual signs of use, text in very good condition.    $5.00

81689. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 227, Number 4694.   Softbound, usual signs of use, text in very good condition.    $5.00

81690. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 228, Number 4695.   Softbound, usual signs of use, text in very good condition.    $5.00

81691. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 228, Number 4696.   Softbound, usual signs of use, text in very good condition.    $5.00

81692. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 228, Number 4697.   Softbound, usual signs of use, text in very good condition.    $5.00

81693. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 228, Number 4698.   Softbound, usual signs of use, text in very good condition.    $5.00

81694. AAAS.   Science.   American Association for the Advancement of Science, 1985, Science, Volume 228, Number 4699.   Softbound, usual signs of use, text in very good condition.    $5.00