$a Kp. Studies on the relation of the nonavailable water [...] / F. J. Alway. - Lincoln, 1913. $b S. tyt.: (Research Bulletin / University of Nebraska ; no. 3)
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$a Geology of the Gunnison quadrangle, Utah / William N. Gilliland. - Lincoln, 1951. $b Wyd.: (University at Lincoln, Nebraska)