United States Geological Survey yearbook U.S. Geol. Surv. yearb (1977) USGS Geological Survey (U.S.) creator text vau Reston, Va.?] Washington, D.C U.S. Dept. of the Interior, Geological Survey For sale by the Supt. of Docs., U.S. G.P.O. 1977 1980 monographic Annual eng
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4 v. ill., maps 29 cm. Description based on: 1980. Report covers fiscal year. Geological Survey (U.S.) Geology Research United States Periodicals QE 76 .U56 353.008/55 I 19.1: I 19.1: GeoRef 0197-7482 USGS Geological Survey (U.S.) United States Geological Survey annual report 0147-8478 (DLC) 77646346 (OCoLC)2386064 U.S. Geological Survey activities (OCoLC)8216333 78645563 //r822 PUCPR 780606 20200624062619.0 76981