Yang, Boon Goh. An Investigation of environmental factors that affect U.S. manufacturing companies' investment in Singapore [microform] / by Yang Boon Goh. - Ann Arbor, Mich. : University Microfilms International, 1989. - 2 microfiches ; 11 x 15 cm. Thesis (Ph.D.) - University of La Verne, 1988 Subjects--Topical Terms: Investment, American--Singapore