Encyclopaedia Britanica, Vol-16 Mushroom to Ozonides /  Textual Documents 
Encyclopaedia B. Ltdritanica. 
 - London :  Encyclopaedia Britanica,Ltd ,  1960. 
 - 1003 ;  29cm. 
<br/><br/><label>Subjects--Index Terms: </label>Encyclopaedia Britanica T/Ref-Knowledge 
<br/><br/><label>Dewey Class. No.: </label>001  / En 19