Haykin, David Judson, 1896-1958.  <br/><br/>
Subject headings  a practical guide 
by David Judson Haykin 
 - Washington  U. S. Government Printing Office  1951 
 - v, 140 p. ;  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Subject headings