Jeffrey, Richard C. <br/><br/>
Formal logic: its scope and limits/ 
Richard C. Jeffrey. 
 - New York:  McGraw-Hill,  [1967]. 
 - xii, 238 p.:  illus.,  23 cm. 
<br/><br/>Bibliography: p. 233-234. 
<br/><br/><label>LCCN: </label>67016929 
<br/><br/><label>Nat. Bib. No.: </label>GB67-25072 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic.
<br/><br/><label>Dewey Class. No.: </label>511.3  / J46f