Ritchie, L. David. <br/><br/>
Information / 
L. David Ritchie. 
 - Newbury Park, Calif. :  Sage Publications,  c1991. 
 - viii, 75 p. :  ill. ;  23 cm. 
 - Communication concepts,  2  1057-7440 ; .
<br/><br/>Includes bibliographical references (p. 68-72) and index. 
<br/><br/><label>ISBN: </label>0803939043 0803939051 (pbk.) 
<br/><br/><label>LCCN: </label>91028881  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication.<br/>Information theory.
<br/><br/><label>LC Class. No.: </label>P90  / .RIT 1991 
<br/><br/><label>Dewey Class. No.: </label>302.2