Compton's; Vol 18  P- Phos 

 - Chicago  Encyclopaedia Britannica lnc.  2010 
 - viii,328 
<br/><br/><label>ISBN: </label>978-1-59339-522-3 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>R032