000 00303 am a2200121 a 4500
245 1 _aUse of Heavy Minerals in Studies of the Origin and Development of Soils
260 _aColumbia
_c1945
300 _a75p
100 1 _aMarshall, C.E.
_d
942 _2udc
_cB
440 _a387, A.E.S.
901 _aS25355
999 _c100115
_d100115