1981 Britannica book of the year. 

 - London :  Encyclopedia Britannica, Inc,  © 1981. 
 - 766 p. :  ill. ;  28 cm. 
<br/><br/> Includes  Index.<br/> 
<br/><br/>314  314 
<br/><br/><label>ISBN: </label>0-85229-381-X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries.
<br/><br/><label>Dewey Class. No.: </label>032 / E19