00523nam a22001457a 4500003000600000005001700006008004100023020001500064040000800079082001100087245019700098260004100295300002500336650001600361MWNLS20110110081224.0110110t        xxu||||| |||| 00| 0 eng d  a0080234313  cdlc  a333.9114aThe aplicaion of systems analysis to problems of irrigation, drainage and flood control :ba manual for water and agricultural engineers /cInternational Commission on Irrigation and Drainage.  aNew York :bPergamon press,cc 1980.  aviii, 202 p. :bill.  aAgriculture