00683nam a2200217   450000500170000000600040001700700040002100800040002502000150002902000180004404000090006205000260007110000210009724501050011825000160022326000720023930000230031150000510033465000630038570000170044820170925105251.0000000000  a812240667X  a9788122406672  aUOEL  aS494.5b.S95.P35 1996  aPalaniappan, sp.  aCropping systems in the tropics :bPrinciples and management /cby S.P. Palaniappan and K. Sivaraman  a2nd rev. ed  aNew Delhi :bNew age international (p) limited, publishers,cc1996.  axii,211 p. :bill.  aIncludes biblliographical references and index  aCropping systems in the tropicsxPrinciples and management  aSivaraman K.