TY  - BOOK
AU  - Hardy,Arthur C.
AU  - Perrin,Fred H.
TI  - The principles of optics 
U1  - 535 HAR P  
PY  - 1932///.
CY  - New York : 
PB  - McGraw-Hill Book Company, Inc., 
KW  - Optics
KW  - Oftalmologia
KW  - Optica
N1  - Includes index.
ER  -