01400nam a2200385Ia 450000100060000000300050000600500170001100800410002801000200006903500200008903500120010904000100012105000160013107400100014708200150015708600120017211000380018421000360022222200530025824500460031124600090035726001300036626500670049630000290056331000110059236200450060350000320064851000220068051500310070261000310073365000580076471000450082278000930086778500540096076981BIBL20200624062619.0780606d19771980vauar1   y   f0   a0eng d  a78645563 //r822  a(OCoLC)03952419  a2353860  aPUCPR00aQE 76b.U56  a621-C  a353.008/550 aI 19.1: 0aGeological Survey (U.S.)  2Local0 aU.S. Geol. Surv. yearb.b(1977)00aUnited States Geological Survey yearbookb(1977)10aUnited States Geological Survey yearbook.14aUSGS00a[Reston, Va.?]bU.S. Dept. of the Interior, Geological SurveyaWashington, D.C.bFor sale by the Supt. of Docs., U.S. G.P.O.,  aSupt. of Docs., U.S. Govt. Print. Off., Washington, D.C. 20402  a4 v.bill., mapsc29 cm.  aAnnual1 aBegan with 1976/77; ceased with FY 1980.  aDescription based on: 1980.2 aGeoRefx0197-7482  aReport covers fiscal year. 0aGeological Survey (U.S.)   0aGeologyxResearchzUnited StatesxPeriodicals.2Local 1aGeological Survey (U.S.)  tUSGS.2Local00tUnited States Geological Survey annual reportx0147-8478w(DLC) 77646346w(OCoLC)238606400tU.S. Geological Survey activitiesw(OCoLC)8216333