01436nam 2200421I 450 991070251510332120140904151339.0(CKB)5470000002429031(OCoLC)889957787(EXLCZ)99547000000242903120140904j199207 ua 0engurbn|||||||||rdacontentrdamediardacarrierGRASS 4.0 map digitizing user's manual, v.digit /by Craig A. Neidig, David P. Gerdes, Chester KosChampaign, Ill. :US Army Corps of Engineers, Construction Engineering Research Laboratory,1992.1 online resource (54 unnumbered pages)USACERL ADP report ;EGI-92/01Title from title screen (viewed May 21, 2014)."July 1992."Includes bibliographical references (page 53).GRASS 4.0 map digitizing GRASS (Electronic computer system)Image processingGRASS (Electronic computer system)Image processing.Neidig Craig A.1396816Gerdes David P.Kos ChesterConstruction Engineering Research Laboratory (U.S. : 1969-1992),GPOGPOBOOK9910702515103321GRASS 4.0 map digitizing3457580UNINA