Description of a magnetic drum calculator 

 - Cambridge  Harvard university press       1952 
 - 318  cm. 
 - Annals of the computation laboratory of Harvard University; 25 .
<br/><br/><label>Standard No.: </label>11,147 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>INDUSTRIAL ARTS
<br/><br/><label>Dewey Class. No.: </label>MB1, J21