Active galaxies - Congresses.

Astrophysics of active galaxies and quasi-stellar objects / by: (Language materials, printed)

First Light in the Universe = Saas-Fee Advanced Course 36. Swiss Society for Astrophysics and Astronomy / by: (Language materials, printed)

Les noyaux actifs de galaxies = galaxies de Seyfert, QSO, quasars, lacertides et radiogalaxies / by: (Language materials, printed)

Active galaxies- Congresses.

Red shift

Quasars- Congresses.

Radio sources (Astronomy)- Congresses.

Physics.

Astronomy, Astrophysics and Cosmology.

Astrophysics- Congresses.

Relativity and Cosmology.