Long Clarence D <br/><br/>
Wages and earnings in the United states 1860-1890 

 -  1960 
 - National bureau of economic research, general series, 67 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wages
<br/><br/><label>Dewey Class. No.: </label>X:93.73.M9, K0