National Library of Medicine :  Permuted medical subject headings 

 - Bethesda :  National Library of Medicine 
 - Annual 
<br/><br/> UKP: v.(1993)- 
 = National Library of Medicine :  Permuted medical subject headings 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Subject headings, medicine--Periodicals