Lenk, John D. <br/><br/>
Handbook of data communications 
John D. Lenk 
 - Englewood Cliffs, N.J  Prentice-Hall  c1984 
 - xi, 308 p.  ill  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digital communications<br/>Data transmission systems
<br/><br/><label>Dewey Class. No.: </label>384