TY  - BOOK
AU  - Ptolemy
AU  - Copernicus,Nicolaus
AU  - Taliaferro,R.Catesby
AU  - Wallis,Charles Glenn
ED  - Kepler, Johannes,
TI  - The almagest,
PY  - 1952///
CY  - Chicago
PB  - Encyclopædia Britannica
KW  - Astronomy
KW  - Early works to 1800
KW  - Mathematics, Greek
N1  - Includes bibliographies
ER  -