TY - BOOK AU - Defensor,Josefina N. AU - Tremedal,Glorina N Tremedal,Glorina N> > TI - A teaching guide on instructional aids in modern mathematics for the primary grades PY - 1974/// CY - Penang PB - SEAMEO Regional Centre for Edu. in Science and Mathematics KW - Mathematics KW - Study and teaching (Primary) KW - Teacher training KW - 1961- ER -