Pittsburgh conference on BL LAC objects 
edited by Arthur M. Wolfe                                       
 - Pennsylvania  University of Pittsburgh  1978 
 - [various pagings.] 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and astrophysics thesaurus<br/>BL LAC objects<br/>Quasars<br/>Radio sources
<br/><br/><label>Universal Decimal Class. No.: </label>524.75(082.2)  / PIT