00682nam a2200217Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d 0-935702-22-9 IIA Library 524.54 OST Osterbrock, Donald E. 8397 Astrophysics of gaseous nebulae and active galactic nuclei Donald E. Osterbrock Mill Valley University Science 1989 xv, 408p. Active galactic nuclei 6209 Astrophysics 794 Gaseous nebulae 2296 Nabulae 16298 Seyfert galaxies 15370 BK 9660 9660 0 0 0 0 BAN BAN GEN 0000-00-00 5 4 524.54/ OST 10570 2026-04-17 2025-07-31 0000-00-00 BK