00606nam a22002057a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001500102110004700117245010100164260002900265300003000294490002900324650001800353830002900371CHAP20220329134354.0971013s1981            r     00010     d  a19541  a20513  a24601  cCHAP  a631.7bA53  aAmerican Society of Agricultural Engineers  aIrrigation, challenges of the 80's; proceedigns of the ASAE Second National Irrigation Symposium  aSt. Joseph, Mich.,c1981  a252 p.b: ilus. ; gráfs  aASAE publicationv; 6-8114aIrrigación.0 aASAE publicationv; 6-81