TY  - BOOK
TI  - Great books of the Western World: vol.15 / 
SN  - 0-85229-531-6
U1  - 808.8 
PY  - 1990///
CY  - Chicago
PB  - Encyclopaedia Britannica
KW  - Ptolemy
KW  - The Almagest
KW  - Copernicus, Nicolaus
KW  - On the revolutions of the hevavenly spheres
KW  - Kepler, Johannes
KW  - Eptitome of copernican astronomy
KW  - The harmonies of the world
ER  -