Arnell, Alvin <br/><br/>
Standard graphical symbols :  a comprehensive guide for use in industry, engineering and science / 
Alvin Arnell 
 - New York :  McGraw-Hill Companies,  1963 
<br/><br/>Includes references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Graphical symbols
<br/><br/><label>Dewey Class. No.: </label>620.03  / ARN