W.M. Jennings <br/><br/>
Percussion drilling rigs and tools for shallow water wells 

 - London  Technical Press Ltd  1934 
 - 92p 
<br/><br/>W.M. Jennings: Percussion drilling rigs and tools for shallow water wells.  London.  Technical Press Ltd, 1934.--(627.75JEN)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>627.75  / JEN