TY  - BOOK
AU  - SUBRAHMANYAM, N
AU  - AVADHANULU, M N
AU  - LAL, BRIJ
TI  - A textbook of Optics: For B. Sc. Classes as per UGC Model Syllabus
PY  - 1966///
CY  - New Delhi
PB  - S Chand
ER  -