000 00311 am a2200121 a 4500
100 1 _aWilliam, P., Headden, A.M.
245 1 _aSoil study
260 _aFort Collins
_c1898
300 _a1-63 p.
942 _2udc
_cB
440 _aSoil Colorado Agricultural Experiment Station. Bulletin No. 46
901 _aS47085
999 _c102914
_d102914