TY  - GEN
AU  - Chawla , C. L. 
AU  - Khan , S. A.  
TI  - Polytecnic applied physics Vol; 1: according to latest revised syllabus
U1  - 621 
PY  - 1998///
CY  - Ludhiana
PB  - S.K. Kataria and Sons
KW  - APPLIED PHYSICS
ER  -