000 00326nam a2200121Ia 4500
005 20260224040809.0
008 260224s9999||||xx |||||||||||||| ||und||
082 _a631.7 SCH
100 _aFrank W.Schaller
245 0 _aAgricultural management and water quality
260 _aAmes: IOWA State University Press,
_c1983
942 _cBK
999 _c746
_d746