Powell Fred  Wilbur <br/><br/>
Bureau of mines 
by Powell Fred  Wilbur 
 -  1923 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>67252 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Building engineering
<br/><br/><label>Dewey Class. No.: </label>D3h73:1:N3, F3