Jeffrey, Richard C, <br/><br/>
Formal logic :  its scope and limits / 
Richard C. Jeffrey. 
 - New York :  McGraw-Hill,  (c)1967. 
 - xii, 238 pages ;  23 cm. 
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<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>LC Class. No.: </label>BC71  / .F676 1967 BC71