TY  - BOOK
AU  - Ley,Willey
TI  - Watchers of the skies: an informal history of astronomy from Babylon to the space age 
U1  - 520.9 
PY  - 1964///
CY  - London
PB  - Sidgwick & Jackson
KW  - Astronomy
KW  - History
KW  - Popular works
N1  - Includes index; Bibliography: p. 518-520
ER  -