na INLIS000000000001981 0010-0121000347 Farming systems research upland agriculture and conservation research highlights 1985-1986 Bogor UACP-FSR 1987 31 p. : ill ; 24 cm 631.45 631.45 LAHAN KERING LAHAN KERING-KONSERVASI UPLAND CONSERVATION. 3024 3024