TY  - BOOK
AU  - Mathur,B.K.
AU  - Panya,T.P.
TI  - Principles of optics
U1  - 535 21
PY  - 1962///.[Reprinted 1980]
CY  - Kanpur, India
PB  - Gopal Printing Press
KW  - Optics
ER  -