TY  - BOOK
AU  - Ptolemy.
TI  - The almagest / Ptolemy. On the revolutions of the heavenly spheres / Nicolaus Copernicus. Epitome of Copernican astronomy : IV-V. The harmonies of the world : V / J. Kepler. - 2nd edition
T2  - Great books of the Western world
SN  - 0-85229-531-6
PY  - 1990///
CY  - Chicago ; Auckland ; Geneva 
PB  - Encyclopd̆ie Britannica, Inc.
ER  -