00945nam a2200229Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d 92-9092-026-2 IIA Library 524.64-735(082.1) ESA-2 ESLAB Symposium on Two Topics in X-Ray Astronomy, vol. 2 23rd Bologna, Italy 1989 Sep. 13-20 16911 AGN and X-Ray background proceedings of the 23rd ESLAB symposium on two topics in X-Ray astronomy, vol. 2, held in Bologna, Italy, 13-20 Sept 1989 edited by J. Hunt and B. Battrick France European Space Agency 1989 vi, 707-1143p. ESA SP-296; v. 2 Active galactic nuclei 6209 Astronomy and astrophysics thesaurus X-ray astronomy 7473 Battrick, B ., ed. 11567 Hunt, J., ed. 16912 BK 9961 9961 0 0 0 0 BAN BAN GEN 0000-00-00 0 524.64-735(082.1)/ ESA-2 10871 2021-11-05 0000-00-00 BK Dfl 150