TY  - BOOK
AU  - Oster, Ludwig
AU  - 
TI  - Modern astronomy
U1  - 52 
PY  - 1973///
CY  - San Francisco
PB  - Holden-Day
KW  - Astronomy
KW  - black holes
KW  - Asteroids
KW  - Astrology
KW  - Astrophysics
KW  - Comets
KW  - Meteorites
KW  - Meteors
KW  - Planetariums
KW  - Planets
KW  - Galaxies
KW  - Constellations
KW  - pulsars
KW  - Solar system
KW  - Physical science
KW  - Universe
KW  - Mathematical sciences
KW  - Mathematics
KW  - Number theory
KW  - Set theory
KW  - Group theory
ER  -