TY  - BOOK
AU  - Newton,Sir Isaac,1642-1727
AU  - Newton,Sir Isaac,1642-1727
AU  - Huygens,Christian,1629-1695
TI  - Mathematical principles of natural philosophy. Optics
PY  - 1983///
CY  - Chicago
PB  - Encyclopedia Britannica
KW  - Mechanics
KW  - Mechanics, Celestial
KW  - Optics
KW  - Early works to 1800
KW  - Light, Wave theory of
KW  - Refraction, Double
ER  -