TY  - BOOK
AU  - Sinha, Kripanath
TI  - Some indigenous techniques in improving the basic mathematical skills of secondary school children
U1  - 375.51 Si6 
PY  - 1987///
CY  - Culcutta
PB  - : Chatterjee Publishing Concern, 
KW  - Mathematics - Study and teaching - Secondary
KW  - | Mathematics - Teaching - Techniques
ER  -