Heck, T.J. <br/><br/>
Oil exploiration and development in the north daketa williston basin: 1990-1991 
T.J. Heck 
 - East boulevard  North dakota geological  1992 
 - iv,25p.;ill 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Oil exploration, drilling
<br/><br/><label>LC Class. No.: </label>TN871.2.H4 1992