Bell Telephone System: Techincla Pub. : Monograph: B 

 - New York  Bell Tele. Laboratories  1958 
 - Monograph. No.:3098-3113 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>C3m73:N22
<br/><br/><label>Dewey Class. No.: </label>C3m73:N22  / G0