TY  - BOOK
AU  - Johnson,B.K.
AU  - Johnson,B.K.
TI  - Optics and Optical Instruments: An Introduction with Special Reference to Practical Applications 
U1  - 535+681.4 
PY  - 1960///
CY  - New York
PB  - Dover Publications, Inc.1
KW  - Optics
KW  - Optical instruments
N1  - Index: p. 222-224
ER  -