Britannica book of the year 

 - Chicago  "Encyclopaedia Britannica, Inc     "  1981 
 - 766p.  cm. 
<br/><br/><label>Standard No.: </label>200923 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"n1,L68, M1/RR"