00000cmm a22000003a 4500 UP-99796217610135118 Buklod 20111208095535.0 a grb 001 u| ta 111208s2001 xx d u (iLib)UPD-00182704773 DENG eng CD 14E 2001 BASINS [electronic resource]. region 6. Better Assessment Science Integrating point and Non-point sources. Version 3.0. Washington, DC U.S. Environmental Protection Agency c2001. 5 computer optical discs 4 3/4 in. Computer program Geographic information systems. Watershed management. Water quality. BASINS. FO Computer media UPD DENG CD 14E 2001 Electronic Resource