TY  - BOOK
ED  - Department of Education in Science and Mathematics
ED  - National Council of Educational Research and Training (India)
TI  - Teacher's guide for science
U1  - 507.1 23
PY  - 1981///]-[1983]
CY  - [New Delhi]
PB  - National Council of Education Research and Training
KW  - Sciences
KW  - Study and teaching
N1  - V.1. Class IX--v. 2. Class X
ER  -