Troy, Leo <br/><br/>
Trade union membership, 1897-1962 
by Leo Troy 
 - New York  National Bureau of Economic Research  1965 
 - A65p. 
 - Occasional paper 92 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Labor unions --United States --Statistics
<br/><br/><label>Dewey Class. No.: </label>R8x73 T759