00545nam a2200205Ia 4500003000400000005001700004008004100021040000800062041001200070082001000082082001100092100002500103100003200128245008700160250002500247260001300272260002800285260000900313650001700322OSt20220228172641.0150909s9999    xx            000 0 und d  cCOH  aEnglish  a631.4  bMIN/ER  aMini E R4Researcher  aSuman Susan Varghese4Guide  aFractionation of organic and inorganic nitrogen in important soil types of Kerala.  aM.Sc                  aThrissur  bCollege of Horticulture  c1992  aSoil science