00811nam a2200217 u 4500001001300000003000500013005001700018008004100035040001300076086002200089099002200111245009100133260008300224300001900307490005500326500008800381500004300469500004400512949001800556999001900574hsl000622292DGPO20190831113905.0080828s2007 xxu r f000 0 eng d cGPOdMvI0 aI 19.76:2007-1285 aI 19.76:2007-128500aDigital mapping techniques '06--workshop proceedings, June11--14, 2006 Columbus, Ohio. aWashington, D.C. :bU.S. Dept. of the Interior, U.S. Geological Survey.c2007. a217 p. :bbook0 aU.S. Geological Survey open-file reportv2007-1285 a"Association of American State Geologists and the United States Geological Survey." a"Hosted by the Ohio Geologial Survey." aCRDP Program Historic Shelflist record. aBEVbFed Docs c286050d286050