TY  - BOOK
AU  - Alter,G.
AU  - Ruprecht,J.
ED  - Czechoslovak Academy of Sciences
TI  - The system of Open Star Clusters and our Galaxy: Atlas of Open Star Clusters 
PY  - 1963///
CY  - New York, Praha, London
PB  - Academic Press
KW  - Galaxies
KW  - Stars
ER  -