Burtt E.J. Au. <br/><br/>
Labour in the american economy 

 - London  Macmllan press ltd. London       1979 
 - 489p  cm. 
<br/><br/><label>Standard No.: </label>15,350 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>X:97.73.N7, L9