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1987ApJS...64..459S - Astrophys. J., Suppl. Ser., 64, 459-485 (1987)
Optical and near-infrared observations of BL Lacertae objects and active quasars.
SMITH P.S., BALONEK T.J., ELSTON R. and HECKERT P.A.
Journal keyword(s):
Simbad objects: 19
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