TY  - BOOK
AU  - Oster, Ludwig
TI  - Modern astronomy
SN  - 0-8162-6523-2
PY  - 1973///
CY  - San Francisco
PB  - Holden-Day
KW  - Astronomy
KW  - Astronomy and astrophysics thesaurus
KW  - Astrophysics
ER  -