Principles and types of speech communication 
Ehninger, Dougls. 
 - Ninth ed. 
 -  Scott, Foresman,  1982 
 - xviii, 446 p. 
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<br/><br/><label>ISBN: </label>0-673-18156-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public speaking.
<br/><br/><label>Dewey Class. No.: </label>808.51 P93 1982