TY  - BOOK
AU  - Armitage, Angus,
TI  - Copernicus and the reformation of astronomy
U1  - PS 906.2421 H57/14 
PY  - 1950///
CY  - London
PB  - G. Philip
KW  - Copernicus, Nicolaus,
KW  - Astronomy
KW  - History
N1  - Bbibliography: p. 24
ER  -