Ball, Shirley <br/><br/>
Well Pumping Sucker Rod System  

 - Usa :   American Petroleum Institute,   c1967 
 - 42 p.  : ill 
<br/><br/>
<br/><br/>Pt. 1. An Introduction to Well Pumping  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pumping<br/>Rod System
<br/><br/><label>Dewey Class. No.: </label>621.69  / BAL