TY  - BOOK
AU  - Prabhakaram, K. S.
AU  - Rao, Digumarti Bhaskara
TI  - Concept attainment model in mathematical teaching
SN  - 8171414249
U1  - 372.7 
PY  - 1998///
CY  - New Delhi
PB  - Discovery publishing house
ER  -