Stanchfiel, Jo M, <br/><br/>
Networks / 
Jo M. Stanchfield, Harvey R. Granite; consultant: millard H. Black. 
 - Boston :  Hougton Mifflin,  c1979. 
 - 248 p: ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Readers and speakers