Busch, Peter Alan, 1942-. Political unity and ethnic diversity a case study of Singapore / [microform] : by Peter Alan Busch. - Ann Arbor, Mich. : University Microfilms International, 1972. - 1 microfilm reel : positive ; 35 mm. Thesis (Ph.D.) - Yale University, 1972 ISBN: Y910040252 Subjects--Geographic Terms: Singapore--Ethnic relations--Political aspects