A. U. Lubis

Economic analysis of oil palm smallholder enterprise with primary cooperative loan for members pattern (PCLFM).

Daswir, A. U. Lubis, 1995 .

A preliminary assessment of the possibilities of using spatial remote sensing to study developments on an oil palm plantation in north Sumatra.

A. U. Lubis, Suwandi, B. Naert, 1990 .

Preliminary assessment of the possibilities of using remote sensing to study the running of an oil palm plantation in North Sumatra.

A. U. Lubis, Suwandi, B. Naert, 1990 .