Encyclopaedia Britannica: A new survey of universal knowledge, Vol.23: Vase to Zygote 

 - Chicago  Encyclopaedia Britannica, Inc.  1947 
 - 999 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General encyclopedic works
<br/><br/><label>Dewey Class. No.: </label>R 030  ENC.23