World Health Organization <br/><br/>
International Pharmacopoeia  Vol 3 - Quality Specifications .-Edn 3 

 - Edn 3 
 -  C B S Pub, Delhi 
 - pp 407;   21*14 
<br/><br/><label>Dewey Class. No.: </label>LZ5.1/N91.3/B18475