Search Results       Your search for [author]Corpuz, Federico Nicolas, 1925- returned 1 record.           Age-grade census in relation to grade-progress of the elementary school pupils in the Division of Isabela, 1965-1966 [microform]. by Corpuz, Federico Nicolas, 1925-; Quezon City: Photoduplication Service, University of the Philippines Library, 1975. Subject: Age and intelligence; School children -- Isabela.          Add to Book Cart Relevance: 28.18%