00283nam a2200109Ia 450000500170000000800410001708200140005810000190007224500360009126000380012730000080016520260224040901.0260224s9999||||xx |||||||||||||| ||und||  a631.8 SLY  aSlyke, L.L.V.  0aFertilizers and crop production  aNew Delhi: Agrobios (India)c2001  a492