Exner, Robert M. <br/><br/>
Logic in Elementary Mathematics 
/ by Robert M. Exner 
 - New York :  McGraw Hill Book Company,  1959 
 - 274 p. 
<br/><br/><label>ISBN: </label>6789-MP-9876 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510  / EXN-L