00389nam a22000977a 4500008004100000020001800041082003000059245011300089260007600202300001300278140228b        xxu||||| |||| 00| 0 eng d  a1-930261-01-2  aFil. (R) 631.5 Sh62b2001  aShifting cultivation : towards sustainability and resource conservation in Asia cIFAD, IDRC, ICRAF and IIRR  aPhilippines :bInternational Institute of Rural Reconstruction,cc2001.  ax, 421p,