Children's Britainica Volume 13  Nitrogen to Philistines 

 - UK  Encyclopaedia Britainica, Inc.  1988 
 - 320 
<br/><br/><label>ISBN: </label>0-85229-206-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's Britannica<br/>Non-Fiction<br/>Reference