Borlongan, Deogracias The significance of vocational choices of Philippine High School seniors ( microform) by Deogracias Borlongan - Ann Arbor, Mich. University Microfilms International 1941 - 1 microfilm reel : positive ; 35 mm. Thesis (Ph.D.) - University of Michigan, 1941 Subjects--Topical Terms: High Schools--Philippines Subjects--Geographic Terms: Philippines--High school