000			00512 a2200181 4500
100	1		_aDutta, B.
502			_gDas, S.C.
245	1		_aClay minoralogical studies of some Indian soils in relation to their Genesis.
300			_a84p.
650			_aClay
650			_aMinerology
650			_aSoil types
650			_aX - ray analysis
650			_aWeathering conditions
502			_cIARI, Division of Soil Science and Agricultural Chemistry, New Delhi _bM.Sc. _d1960
942			_2udc _cT
901			_aT939
999			_c139833 _d139833