National Library of Medicine classification. 

 - 3rd ed. 
 - Bethesda :  National Library of Medicine,  1964. 
 - 286 p. ;  29 cm. 
 - DHEW publication ; no.(NIH)78-1535. .
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification--Books--Medicine.