The International pharmacopoeia. Vol. 4 : Test, methods and general requirements / 

 - 3rd ed. 
 - Geneva:  WHO,  1994 
 - xv, 343 p. ;  24 cm 
<br/><br/> Acc. No. 11724 
<br/><br/><label>ISBN: </label>9241544627 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drugs - Analysis<br/>Drugs - Standards