TY  - BOOK
AU  - Ley,Willy
TI  - Watchers of the skies: an informal history of astronomy from Babylon to the space age 
U1  - 523.09 
PY  - 1963///
CY  - New York
PB  - Viking Press
KW  - Astronomy
KW  - History
N1  - Bibliography: p. 518-520. Bibliographical footnotes and index
ER  -