Ackermann, Robert John,  1933- <br/><br/>
Nondeductive inference  / 
by Robert Ackermann. 
 - London :  Routledge & K. Paul ,  1966 
 - v, 130 p. :  diagrs. ;  18 cm. 
 - Monographs in modern logic. .
<br/><br/>Includes bibliography. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Inference--Logic.
<br/><br/><label>Dewey Class. No.: </label>160 ACK