000 003300000a22001450004500
060 _a100
082 _a631.45 AYR
100 _aAyres, Quincy Claude
245 _aSoil erosion and its control
260 _aLondon, Mc Graw- Hill Book Company Inc
260 _c1936
300 _a365
650 _aSoil erosion
942 _cBK
999 _c221731
_d221731