00336nam a22001097a 4500003000400000082001900004245011700023260002700140300001400167546001200181650003300193OSt  a631.8 bVIR/SO  aSoil fertility and fertiliser use:bv.3nutrient management and supply system for sustaining agriculture in 1990s  aNew DelhibIFFCOc1990  axiv,357p.  aEnglish  aurea super granules for rice