Biological substances:   International biological standards, international biological reference preparations, and international biological reference reagents 

 - Geneva:   World Health Organization,   1979 
 - 81p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology
<br/><br/><label>Universal Decimal Class. No.: </label>577.1:006.32(100)WHO  / L9