Nelson Ralph L <br/><br/>
Concentration in the manufafcturing industries of 

 -  1963 
 - Economic Census studies, 2 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industrial Management
<br/><br/><label>Dewey Class. No.: </label>X9:8-517.73.N6, K3