Biological substances :  international standards and reference reagents : 1990 

 - Geneva :  World Health Organization,  1991 
 - 105 p. ;  25 cm. 
<br/><br/> Prepared by the WHO Expert Committee on Biological Standardization 
<br/><br/><label>ISBN: </label>9241544295 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biological assay--Standards.<br/>Biological products--Standards<br/>Biological reagents--Standards<br/>Drugs--Standards
<br/><br/><label>LC Class. No.: </label>RA401  / .B56 1991