000 00591 a2200217 4500
245 1 _aPhosphorus availability in relation to characteristics of major soil series of Delhi
300 _a92p.
650 _aPhosphorus
650 _aSoil texture
650 _aSoil fertility
650 _aNitrogen
650 _aSoil types
650 _aSoil PH
650 _aTrace elements
650 _aCarbon
502 _cIARI, Division of Soil Science and Agricultural Chemistry, New Delhi
_bM.Sc.
_d1989
502 _gHasan, R.
100 1 _aKumar, K.
942 _2udc
_cT
901 _aT4892
999 _c142181
_d142181