The supervisory practices of elementary school principals in the Division of Cagayan [microform - Mallonga, Rosario Singson 1926- (Quezon City Photoduplication Service University of the Philippines Library, 1976)
Microfilmed with 13 other titles.
Thesis (M.Ed.)--University of the Philippines, Diliman.
Originally published in Quezon City, 1970.
Keywords: School superintendents and principals -- Cagayan (Province); School supervision