Donaldson, Stephen <br/><br/>
Forbidden knowledge :  The gap into vision / 
S. Donaldson. 
 - London :  HarperCollins,  1991. 
 - 569 p. 
<br/><br/><label>ISBN: </label>0006470203 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science fiction