00644cam a2200169 a 4500020001500000040000800015082002600023245010200049260012000151300003100271650002800302650002500330650002000355710007500375942000700450999001700457  a9715600328  cAGL  a471 SEA 1999 A023 Co.00aUtilization and protection of degraded Philippine uplands :btechnologies and management systems.  aLos Ba�nos, Laguna, Philippines :bSEAMEO Regional Center for Graduate Study and Research in Agriculture,cc1999.  ai, 39 p. :bill. ;c28 cm. 0aSustainable agriculture 0aSustainable forestry 0aSoil protection2 aSEAMEO Regional Center for Graduate Study and Research in Agriculture.  cEK  c13846d13846