Bowker AV guide :  a subject guide to audio-visual educational material / 
[edited by] Marion Koenig 
 - London :  Bowker,  1975 
 - xiv, 611 p. ;  23 cm. 
<br/><br/><label>ISBN: </label>0859350037 
<br/><br/><label>LCCN: </label>75-332824 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio--visual materials--Catalogs