00291nam a2200109Ia 450000500170000000800410001708200150005810000170007324500460009026000370013630000080017320260224040757.0260224s9999||||xx |||||||||||||| ||und||  a631.86 GUP  aGupta, P.K.  2aA handbook of soil, fertilizer and manure  aJodhpur : Agrobios (India)c2004  a591