TY  - BOOK
AU  - Johnson,B.K.
TI  - Optics and optical instruments: an introduction with special reference to practical applications 
T2  - Dover books explaining science
SN  - 0486606422
PY  - 1960///
CY  - New York
PB  - Dover
KW  - Òptica
KW  - Aparells i instruments
N1  - Índex
ER  -