Ennis, Robert Hugh, 1927-  Ennis, Robert Hugh, 1927- <br/><br/>
Ordinary logic 
[by] Robert H. Ennis. 
 - Englewood Cliffs, N.J.,  Prentice-Hall  [1969] 
<br/><br/>Bibliography: p. 118-119. 
<br/><br/><label>ISBN: </label>0136398561  2.25 
<br/><br/><label>LCCN: </label>69017480 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic.<br/>Reasoning.
<br/><br/><label>LC Class. No.: </label>BC108  / .E6 
<br/><br/><label>Dewey Class. No.: </label>160