Gustason, William <br/><br/>
Elementary symbolic logic / 
by William Gustason, Dolph E Ulrich. 
 - New York:  Holt, Rinehart Winston,  1973. 
 - 280p. 
<br/><br/><label>ISBN: </label>0030046165 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Symbolic logic
<br/><br/><label>Dewey Class. No.: </label>511.3  / GUS