TY  - SER
AU  - Kopal,Zdenek
TI  - Advances in astronomy and astrophysics
U1  - 520.82 23rd
PY  - 1962///-1972
CY  - New York
PB  - Academic Press
KW  - Astronomy
KW  - Periodicals
KW  - Astrophysics
N1  - Description based on: vol. 9 (1972)
ER  -