00353nam a2200145Ia 4500008004100000020001800041082000800059082001000067100002300077100002100100245003900121260000700160260003100167260000900198230118s9999||||xx |||||||||||||| ||und||  a0-521-47989-4  a530  bKEM/Q  aajith k bkembhavi  bjayant vnarlikar 0aquasars and active galactic nuclei  auk  bcambridge university press  c1999