A study of the relation between entrance age and subsequent progress in primary grades [microform] - Balbuena, Delia L. 1937- (Quezon City Photoduplication Service, University of the Philippines Library, 1975)
Microfilmed with 15 other titles.
Thesis (M.A.)--Arellano University, Manila.
Originally published in 1961.
Keywords: School age (Entrance age).