Well Drilling Manual  / 
Prepared by Speedstar Division of Koehring Company 
 - 72 p. : il. 
<br/><br/><label>LCCN: </label>TIPO-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>AGUAS SUBTERRANEAS<br/>GEOLOGIA<br/>PERFORACION DE POZOS - MANUALES
<br/><br/><label>Dewey Class. No.: </label>628.114  / W447