Age-grade census in relation to grade-progress of the elementary school pupils in the Division of Isabela, 1965-1966 [microform] - Corpuz, Federico Nicolas 1925- (Quezon City Photoduplication Service, University of the Philippines Library, 1975)
Microfilmed with 15 other titles.
Thesis (M.A.)--Northwestern College, Laoag City.
Originally published in 1966.
Keywords: Age and intelligence; School children -- Isabela