TY  - GEN
AU  - Hazard, C. 
TI  - Active galactic nuclel: based on the proceedings of a NATO Advanced Study Institute held at the Institute of Astronomy, University of Cambridge, August, 1977 
U1  - 523.11206 
PY  - 1979///
CY  - London
PB  - Cambridge University Press
KW  - Galaxy : Proceedings
KW  - Nuclear Astrophysics : Proceedings
ER  -