Ferguson, Brad. <br/><br/>
The world next door / 
Brad Ferguson. 
 - First edition. 
 - New York :  Tom Doherty Associates,  1990. 
 - 342 pages :  map ;  17 cm. 
<br/><br/> "A Tor book." 
<br/><br/><label>ISBN: </label>0812537955