TY - BOOK ED - Food and Agriculture Organization of the United Nations TI - Computer-assisted watershed planning management: technologies for national planning T2 - FAO conservation guide; , SN - 9251037930 U1 - 551.488 21st ed. PY - 1996/// CY - Rome PB - Food and Agriculture Organization of the United Nations N1 - Contents: Pt.1. Concepts and general technology - Pt.2. Use of computer systems and associated technology ER -