000 003170000a22001450004500
060 _a100
082 _a631.4 BEN
100 _aBennett, C
245 _aDevelopment of soil conservation
250 _a2
260 _aMc Graw- Hill Book Company Inc
300 _a358
650 _aSoil conservation
942 _cBK
999 _c363770
_d363770