Leonard, Henry Siggins, 1905-1967. <br/><br/>
Principles of reasoning  an introduction to logic, methodology and the theory of signs 
Henry S. Leornard 
 - New York  Dover Pub. Inc.  1967 
 - 620 p. ; 22 cm. 
<br/><br/> 'Revised version of the work originally published ... in 1957 under the title Principles of right reason.' 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic<br/>Semantics (Philosophy)