Crammer, J L . <br/><br/>
Science News 10 /  Textual Documents 
J L Crammer. 
 - 1st ed / 
 - Middlesex :  Penguin Books Ltd ,  1949. 
<br/><br/><label>Subjects--Index Terms: </label>Science essays T/G-Science 
<br/><br/><label>Dewey Class. No.: </label>505  / Cr84 Sc