The radio frequency spectrum :  United States use and management / 
United States Office of Telecommunications Policy 
 - Washington, D. C. :  The Office,  1975 
 - 1v.(various pagings) :  ill., maps, charts ;  26 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio frequency allocation--United States<br/>Radio frequency allocation
<br/><br/><label>Dewey Class. No.: </label>384.5