TY - BOOK ID - 136838871 TI - Procedures for determining drainage areas using a digitizer, digital computer, and topographic maps AU - Gold, Robert L. AU - Winkless, Dan AU - Geological Survey (U.S.) PY - 1988 PB - Albuquerque, New Mexico : U.S. Geological Survey, DB - UniCat KW - Drainage KW - Digital mapping. KW - Topographic maps. KW - Maps. KW - United States. UR - https://www.unicat.be/uniCat?func=search&query=sysid:136838871 AB - ER -