Harman Gilbert <br/><br/>
If and modus ponens 

 - Bloomington  Indiana Univ Linguistics Club      1975 
 - 12p.  cm. 
<br/><br/><label>Standard No.: </label>47,666 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LINGUISTICS
<br/><br/><label>Dewey Class. No.: </label>P, L58