Wright, Georg Henrik von. , <br/><br/>
Logical studies / 
Georg Henrik von Wright. 
 - ix, 195 pages :  illustrations ;  23 cm. 
 - International library of psychology, philosophy of logic and mathematics .
<br/><br/><label>ISBN: </label>0415225752 0415225477 9780415225472 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic.
<br/><br/><label>LC Class. No.: </label>BC6   / .E74 1957