Scott, Winston W. <br/><br/>
Communication systems guide / 
Winston W. Scott 
 - Washington, D.C. :  United States Government Printing Office ,  1979 
 - 32 p. :  photoes ;  27 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication<br/>Digital communications
<br/><br/><label>Dewey Class. No.: </label>621.382