International Astronomical Union. Symposium Biurakan, Armenian S.S.R.) 1986 :
Observational evidence of activity in galaxies : Proceedings of the 121st Symposium of the International Astronomical Union, held in Byurakan, Armenia, U.S.S.R., June 3-7, 1986 /
Ed. by E. Ye. Khachikian, K.J. Fricke, and J. Melnick.
- Dordrecht ; Boston ; Norwell, MA, U.S.A. : D. Reidel : Sold and distributed in the U.S.A. and Canada by Kluwer Academic Publishers, 1987.
- xxii, 601 p. : ill. ; 25 cm.
Includes bibliographies and indexes.
9027724733 9027724741 (pbk.)
Active galaxies--Congresses. Seyfert galaxies--Congresses. Radio sources (Astronomy)--Congresses. Quasars--Congresses.