00565nam a2200205Ia 4500003000400000005001700004008004100021040000800062041001200070082001000082082001100092100003300103100002600136245010400162250002500266260001500291260002700306260000900333650001700342OSt20220228172624.0150909s9999    xx            000 0 und d  cCOH  aEnglish  a631.4  bWIL/FE  aWilfred Godwin G4Researcher  a Alice Abraham4Guide  aFertility investigations on the soils of south Kerala in relation to their physiographic positions.  aM.Sc                  aTrivandrum  bCollege of Agriculture  c1986  aSoil science