Encyclopaedia britannica 

 - Chicago  William benton London        1973 
 - 1022p  cm. 
 -  V7 .
<br/><br/><label>Standard No.: </label>7,162 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>33:L68, J5;L3.7