Primary health care among the Orang Ulu of Sarawak, Malaysia / by P.C.Y. Chen ...(et al.). - University of Malaya, Kuala Lumpur: Dept. of Social and Preventive Medicine, 1989. - 78 p. ; 27 cm. Subjects--Topical Terms: Medical care--Sarawak.Orang Ulu--Medical care.