Kennedy, John L <br/><br/>
Fundamentals of drilling--technology and economics / 
John L. Kennedy 
 - Tulsa, Okla. :  PennWell,  1983 
 - vii, 216 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Oil well drilling<br/>Gas well drilling