TY  - BOOK
AU  - Gupat, K.B.
AU  - Gupat, K.B.
AU  - Mathur, R.N. (Ed)
TI  - Teaching of science in secondary schools
U1  - 375.5 
PY  - 1982///
CY  - New Delhi
PB  - National Council for Educational Research and Training
ER  -