TY  - BOOK
AU  - Courvoisier, T. J. L., ed.
AU  - Mayor, M., ed.
TI  - Active galactic nuclei
T2  - SAAS-FEE Advanced Course 20 Lecture Notes 1990 Swiss Society for Astrophysics and Astronomy
SN  - 3-540-53285-4
PY  - 1990///
CY  - Berlin
PB  - Springer-Verlag
KW  - Active Galactic Nuclei
KW  - Active Galaxies
KW  - Astronomy and Astrophysics Thesaurus
KW  - Seyfert Galaxies
ER  -