000 00384nam a2200133Ia 4500
008 220204s9999 xx 000 0 und d
082 _a631.459:631.61
_bGUS
100 _aGUSTAFSON, A F
245 0 _aConservation of the soil.
260 _aNew York
_bMcGraw Hill
_c1937
490 _aMcGraw Hill publications in the agricultural sciences
650 _aSoil conservation
942 _cBK
999 _c19395
_d19395