00285nam a2200097Ia 4500008004100000082002800041100002600069245006500095260002000160300000700180140113s9999    xx            000 0 und d  a631.67(252)(456.3)   N7  a"Hillel, Daniel.,Ed."  aSmall scale irrigation for Arid zones : Principles & options  a1997bFAOcRome  a56