000			00309nam a2200133Ia 4500
999			_c362181 _d362181
003			OSt
020			_a9788176222129
082			_a631.7 _bGUS
100			_aGustafson, A.F.
245		0	_aConservation of the soil _bA.F. Gustafson
260			_aDelhi _bBiotech Books _c2011
300			_a312p.
942			_2ddc _cBK