TY  - BOOK
AU  - Hardy,Arthur C.
AU  - Perrin,Fred Hiram
TI  - The principles of optics
U1  - 535 23
PY  - 1932///
CY  - New York, London
PB  - McGraw-Hill book company, inc.
KW  - Optics
N1  - Includes index
ER  -