Merck index:   An encyclopedia of chemicals, drugs, and biologicals 

 - 11th ed. 
 - N. J.:   Merck & Co.,   1989 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Subjects--Index Terms: </label>Chemicals Biomolecules 
<br/><br/><label>Universal Decimal Class. No.: </label>R 615(038)  / M9