000 00283nam a2200109Ia 4500
100 _aGustafson, A F
942 _cBK
245 _aHandbook of fertilizers
_Btheir sources, makeup, effects and use
260 _aAgro Botanical Publ, Bikaner
_c1997
082 _a631.8 Gus
300 _a160
999 _c31687
_d31687