00678nam a2200217Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d 0-935702-22-9 IIA Library 524.54 OST Osterbrock, D. E. 24143 Astrophysics of gaseous nebulae and active galactic nuclei D. E. Osterbrock California University Science 1989 xv, 408p. Active galactic nuclei 6209 Astrophysics 794 Gaseous nebulae 2296 Nabulae 16298 Seyfert galaxies 15370 BK 15269 15269 0 0 0 0 BAN HOS GEN 2003-08-01 EDS 2224.98 0 524.54/ OST 16191 2021-11-05 2224.98 2003-08-01 BK Rs. 2224.98