TY  - BOOK
AU  - Casareo,Divinia
TI  - A unit on individualized instruction materials in elementary school mathematics: measuring area and perimeter, grade IV
PY  - 1974///
CY  - Penang
PB  - SEOMEO Regional Centre for Education in Science and Mathematics
KW  - Mathematics
KW  - Study and teaching (Elementary)
KW  - 1961-
ER  -