Trumbull, Loyal Wingate, <br/><br/>
A mancial of underground surveying / 
By loyal wingate trumbull 
 - 251 páginas 
 - Mining library ;  v. 7 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Topografía de minas
<br/><br/><label>LC Class. No.: </label>TN273  / T78