Crammer , J.L. . <br/><br/>
Science News 11 /  Textual Documents 
J.L.Crammer. 
 - Ist ed / 
 - New York :  Penguin Books Ltd ,  1949. 
 - 159p ;  13cm. 
<br/><br/><label>Subjects--Index Terms: </label>Science News G- Mathematics T/G-Math 
<br/><br/><label>Dewey Class. No.: </label>505  / Sc 57