TY - BOOK AU - Clarke,Paul F. AU - Hodgson,Helen F. AU - North,Gary W. ED - Geological Survey (U.S.) TI - A guide to obtaining information from the USGS, 1978 U1 - 557.308 PY - 1978/// CY - Washington, D. C. PB - U.S. Dept. of the Interior, Geological Survey KW - Geology KW - United States KW - Information Services KW - Hydrology KW - Information services KW - Mines and mineral resources ER -