Bernknopf, Richard L. (Richard Lewis) National Geologic Mapping Program U.S text bibliography dcu Washington, D.C.] U.S. G.P.O. 1993 monographic eng

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vi, 53 p. col. ill., col. maps 28 cm. by Richard L. Bernknopf ... [et al.]. "An economic analysis by the U.S. Geological Survey's National Geologic Mapping Program that describes (1) geologic maps and their use as a fundamental data base, (2) a rigorous benefit-cost model for valuing geologic map information, and (3) the economic issues associated with determining whether or not a geologic map is a public good." Includes bibliographical references. Geological mapping QE36 .S63 1993 550/.22/3 I 19.4/2:1111 I 19.4/2:1111 92044935 921208 20160527192017.0 192570