Illustrated science and invention :   Statistics - teleprinter and telex 

 - 2229 - 2368 pages :   colour illustrations ;   26 cm 
 - How it works .
 - How it works .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science - Encyclopedias
<br/><br/><label>Dewey Class. No.: </label>503