000			00327nam a2200121Ia 4500
008			140317s9999 xx 000 0 und d
082			_a631.8
100			_aIndian Statistical Institute.
245			_aOptimum requirement of fertilisers for the fifth plan period. Vol.I
260			_a _b _c1974
300			_a145
942			_2ddc _cBK
999			_c6778 _d6778