Hamilton Walton H <br/><br/>
Way of order for bituminouscoal 
Hamilton Walton H; Wright Helen R 
 -  1928 
 - Institute of Economics of the Brookings Institution Publicaitons 27; Investigaitons in Industry and labour ,2 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal  Industry
<br/><br/><label>Dewey Class. No.: </label>X9F551:8:73:N2, F8