Grolier encyclopedia of knowledge  volume 16: Ref-Sev/ 

 - Danbury, Connecticut:  Grolier Incorporated,  1991. 
 - 415 pages:  colored images;  24 cm. 
<br/><br/><label>ISBN: </label>0717253007 0717253163 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries.
<br/><br/><label>Dewey Class. No.: </label>031  / G894