Maycock W. Perren <br/><br/>
Electric-Writing Diagrams 

 -  SIPS  1947 
 - 323p.  23 cm. 
<br/><br/><br/>Text in English 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>ELEC
<br/><br/><label>Index Terms--Genre/Form: </label><br/>D-23
<br/><br/><label>Dewey Class. No.: </label> / MAY