000			00334nam a2200133Ia 4500
008			221123s9999 xx 000 0 und d
082			_a626.82 W22S
100			_aWAPCOS
245		0	_aSeepage loss measurements for irrigation channels
260			_bW.A.P.C.O.S. _c1981
300			_a22 p.
650			_aIrriagtion channels
942			_cR
999			_c6733 _d6733