The Merck index :  an encylopedia of chemicals and drugs / 
Martha Windholz et al. 
 - 9th. 
 - Rahway :  Merck,  1976. 
 - 1835 p. :  ill. ;  26 cm. 
<br/><br/> Closed. 
<br/><br/><label>LCCN: </label>7627231