TY  - BOOK
AU  - Prasad, S N ed
TI  -  Physics resource matherial: for secondary school teachers  vol 2 
U1  - 535 
PY  - 1974///
CY  - New Delhi
PB  - National council of educational research & training
KW  - Physics
N1  - Vol 2 : Heat optics & waves; Vol 2 : Heat optics & waves
ER  -