TY  - BOOK
T1  - A more perfect heaven :how Nicolaus Copernicus revolutionized the cosmos /
DA  - 2011.
CY  - New York :
AU  - Sobel, Dava.
ET  - 1st U.S. ed.
CN  - QB501
CN  - QB501
PB  - Walker Pub.,
PP  - New York :
PY  - 2011.
ID  - 416116
KW  - Astronomy.
SN  - 9780802717931
SN  - 0802717934
TI  - A more perfect heaven :how Nicolaus Copernicus revolutionized the cosmos /
ER  -