00966nam 2200349Ka 450 991069043060332119981231124128.0(CKB)5470000002338999(OCoLC)40561125ocm40561125(OCoLC)995470000002338999(EXLCZ)99547000000233899919981231g19989999 ua 0engtxtrdacontentcrdamediacrrdacarrierOpen-file reports[electronic resource][Reston, Va.] U.S. Geological Survey<1998- >Title from title screen.Open file reportsEarth sciencesUnited StatesGeologyUnited StatesEarth sciencesGeologyGeological Survey (U.S.)GPOGPOBOOK9910690430603321Open-file reports3097975UNINA