000 00363nam a2200157Ia 4500
008 130223s9999 xx 000 0 und d
080 _a631.811
245 _aPlant nutrients
260 _aDelhi
260 _bIndian Social Institute
260 _c1991
300 _a31p.
440 _aNo.7; Agricultural Education P
901 _pS43219
942 _cB
_2udc
999 _c129894
_d129894