Simpson Alan Ed. <br/><br/>
Data communications: Spreading the message 
Simpson Alan Ed. 
 - Purley  Input-Output           1978 
 - 116p.  cm. 
 - Currents of computer technology .
<br/><br/><label>Standard No.: </label>41056 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Database<br/>Computer science
<br/><br/><label>Dewey Class. No.: </label>D65,8(B):3, L8