National drug code directory, 1980 / 
United States, Food and Drug Administration, Bureau of Drugs. 
 - Maryland :  U.S. Dept. of Health & Human Services, Food & Drug Administration,  1981. 
 - 1v.(various pagings) :  28 cm. 
<br/><br/> Supplement 1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drugs--Directories.--United States
<br/><br/><label>Dewey Class. No.: </label>615.102573