Lewis, Alain A., <br/><br/>
On the formal character of plausible reasoning / 
Alain A. Lewis   
 - iii, 17 pages ;  28 cm. 
 - The Rand paper series;  P-6462 .
 - The Rand paper series;  P-6462  .
<br/><br/>Includes bibliographical references (page 17) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plausibility (Logic)--Mathematical models