Ehlers, Henry J. <br/><br/>
Logic  modern and traditional 

 - Columbus  Charles E. Merrill  1976 
 - vii, 245p. 
<br/><br/><label>ISBN: </label>9780675086769 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LOGIC
<br/><br/><label>Dewey Class. No.: </label>160  / E34