01564oam 2200493 450 991071660170332120210729171214.0(CKB)5470000002524154(OCoLC)50670514(EXLCZ)99547000000252415420020925d2001 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierThe National Map topographic mapping for the 21st century : final reportReston, VA :Cooperative Topographic Mapping Program, U.S. Geological Survey,2001.1 online resource (v, 34 pages) illustrations (some color), color maps"November 30, 2001."Includes bibliographical references (pages 23-24).National Map Geographic information systemsUnited StatesGeographic information systemsfastUnited StatesMapsDatabasesUnited StatesfastDatabases.fastTopographic maps.lcgftMaps.lcgftGeographic information systemsGeographic information systems.Cooperative Topographic Mapping Program (Geological Survey),BUFBUFOCLCFOCLCOOCLCQOCLCOCUSGPOBOOK9910716601703321The National Map3459893UNINA