MGH <br/><br/>
Encyclopedia of Science and Technology 

 - Seventh 
 - New York  MGH, NewYork  1992 
 -  VIII .
<br/><br/><label>ISBN: </label>0000021223 
<br/><br/><label>Subjects--Topical Terms: </label><br/> GEO-HYS <br/> Science <br/> Technology<br/>Dictionaries and Encyclopadies<br/>Encyclopedia 
<br/><br/><label>Dewey Class. No.: </label>621.003