El Swaify S. A. Ed. Multipal objective desision making for land water andenvironmental management - Boston Lewis Publishers 1998 - xxii,743p cm. - World Association of Soil and Water Conservation. . Bibliography Chapterwise ISBN: 1574440918 3592.24 Source: 2816/DM166.00, 19/12/2000, Elite General Book Subjects--Topical Terms: Natural Resources Geography Dewey Class. No.: U671:(G:55), N8