000 00305nam a2200121Ia 4500
008 170101s1981 xx 000 0 und d
082 _a631.4 HCH
100 _aSchwab G O
245 0 _aSoil & Water Conservation Engg
260 _aNew York
_bJohn wiley & sons
_c1981
300 _a525 p
942 _2ddc
_cB
999 _c945066
_d945066