000 00331nam a2200121Ia 4500
001 MPKV058903
008 120911s9999 xx 000 0 und d
082 _a631.7
245 _aWater Research Vol 7 No.1-5
_c;
246 _aWater Research Vol 7 No.1-5
260 _aUSA
_bPergamon Press Inc
_c1973
650 _aIrrigation and Drainage
999 _c56891
_d56891