Behr, Hans C. <br/><br/>
Mine drainage, pumps, etc. 

 - Sacramento, CA  California State Mining Bureau  1896 
 - 210 p.  ilus. 
 - California State Mining Bureau. Bulletin  n.9 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>BOMBAS<br/>DRENAJE<br/>MINAS
<br/><br/><label>Universal Decimal Class. No.: </label>A/622.5/B33