Technology assessment and forecast :  forth report, a report of patent ownership 

 - Washington, D.C. :  Department of Commerce ,  1975 
 - 143 p. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economic development<br/>Regional economics
<br/><br/><label>Dewey Class. No.: </label>338.9