Rheingold, Howard. <br/><br/>
Virtual reality / 
Howard Rheingold. 
 - New York :  Summit Books,  c1991. 
 - 413 p. 
<br/><br/><label>ISBN: </label>0671693638 
<br/><br/><label>LCCN: </label>91034002     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Computer simulation.<br/>Technology--Computer simulation.<br/>Cybernetics.