Sigel Efrem etc. <br/><br/>
Future of videotext    Worldwide prospects for home/office electronic information services 
Sigel Efrem etc. 
 - London  Knowledge UK         1982 
 - 197p.  cm. 
<br/><br/><label>Standard No.: </label>69520 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> ECONOMICS<br/>INDUSTRIES
<br/><br/><label>Dewey Class. No.: </label>X8(D65,45), M2