TY  - BOOK
AU  - Newton,Isaac
AU  - Huygens,Christiaan
AU  - Newton,Isaac
ED  - Encyclopaedia Britannica
TI  - Mathematical principles of natural philosophy: Optics 
T2  - Great books of the Western world
AV  - AC 1 G74.no.34
PY  - 1952///
CY  - Chicago
PB  - Encyclopedia Britannica
KW  - Mechanics
KW  - Early works to 1800
KW  - Mecánica
KW  - Obras anteriores a 1800
KW  - Celestial mechanics
KW  - Mecanica celeste -
KW  - Optics
KW  - Optica
ER  -