WHO Expert Committee on Biological Standardization :  forty-first report. 

 - Geneva :  WHO,  1991. 
 - v, 79 p. 
 - WHO technical report series ; 814 .
<br/><br/> WHO Technical report series classified under 615.1 W927 & (incl. series no. in the suffix). 
<br/><br/><label>ISBN: </label>9241208147 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biological products--Standards.<br/>Drugs--Standards.