000			00945nam a2200229Ia 4500
003			IN-BaIIA
008			211028s9999 xx 000 0 eng d
020			_a92-9092-026-2
040			_cIIA Library
080			_a524.64-735(082.1) _bESA-2
111			_aESLAB Symposium on Two Topics in X-Ray Astronomy, vol. 2 _n23rd _cBologna, Italy _d1989 Sep. 13-20 _916911
245		0	_aAGN and X-Ray background _bproceedings of the 23rd ESLAB symposium on two topics in X-Ray astronomy, vol. 2, held in Bologna, Italy, 13-20 Sept 1989 _cedited by J. Hunt and B. Battrick
260			_aFrance _bEuropean Space Agency _c1989
300			_avi, 707-1143p.
490			_aESA SP-296; v. 2
650			_aActive galactic nuclei _96209
650			_aAstronomy and astrophysics thesaurus
650			_aX-ray astronomy _97473
700			_aBattrick, B ., ed. _911567
700			_aHunt, J., ed. _916912
942			_cBK
999			_c9961 _d9961