1977 Britannica book of the year 

 - Chicago  Encyclopedia  Britannica inc  1977 
 - 768 p. 
<br/><br/><label>ISBN: </label>852293259 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedia
<br/><br/><label>Dewey Class. No.: </label>30  / BRI