TY  - BOOK
AU  - Shapley, Harlow
ED  - 
TI  - Source Book in Astronomy 1900- 1950
U1  - 520.82 Sha/Sou 
PY  - 1960///
CY  - Cambridge
PB  - Harvard University Press
KW  - Astronomy & Allied Sciences
N1  - B
ER  -