000 00313nam a2200121Ia 4500
001 MPKV057900
008 120911s9999 xx 000 0 und d
082 _a631.4
245 _aSoil Conservation
_c;
246 _aSoil Conservation
260 _aWashington
_bUS Govt. Printing Office
_c1978
650 _aSoil Science
999 _c55890
_d55890