TY  - BOOK
AU  - Ptolemy
AU  - Copernicus, Nicolaus
AU  - Kepler, Johannes
TI  - The Almagest, On the revolutions of the heavenly spheres, Epitome of Copernican astronomy: IV and V. The harmonies of the world
U1  - 522 
PY  - 1952///
CY  - Chicago
PB  - Encyclopedia Britannica, Inc
KW  - Astronomy 2.Mathematics
N1  - The Almagest By Ptolemy; On The Revoluations Of The Heavenly Spheres By Nicolaus Copernicus;Epitome Of Copernican Astronomy: Iv And V.The Harmonies Of The World: V By Johannes Kepler
ER  -