14257. Erickson, K.   Hydrology of the Charlotte Lobe Delta.   North Dakota Academy of Science, 1967, Proceedings, 21 : 9-16, 6 figures.   Off-print, usual signs of use and age, text in very good condition.    $4.00

14256. Reid, J. R.   Glaciers - "Living and Dead".   North Dakota Academy of Science, 1967, Proceedings, 21 : 42-56, 4 figures.   Off-print, usual signs of use and age, text in very good condition.    $6.00

14254. Ross, J. D. and Karner, F. R.   Petrography of Core and Well Samples from Lake Agasiz and Associated Sediments, Grand Forks, North Dakota.   North Dakota Academy of Science, 1967, Proceedings, 21 : 147-161.   Off-print, usual signs of use and age, text in very good condition.    $5.00