21st century websters pocket encyclopedia ; Vol-10 

 - Revised Edition 
 - USA  Trident Press International  2000 
 - 270  Pb 
<br/><br/> Toxin-Zwo 
<br/><br/><label>ISBN: </label>1-58279-080-9 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Encyclopedia<br/>
<br/><br/><label>Dewey Class. No.: </label>R031