000 00336 am a2200121 a 4500
100 1 _aThornton, D.
245 1 _aSoil conservation study in the United States of America
260 _aTanganyika
_c1950
300 _a1-44 p.
942 _2udc
_cB
440 _aSoil Tanganyika Department of Agriculture. Pamphlet No. 46
901 _aS46617
999 _c102207
_d102207