Duvall, Wilbur I. <br/><br/>
Least squares calculation of horizontal stress from more than three diametral deformations in vertical boreholes 
by Wilbur I. Duvall and James R. Aggson. 
 - [Washington]  Dept. of the Interior, Bureau of Mines  1980 [i.e. 1979] 
 - 12 p.  27 cm. 
 - Report of investigations  8414 .
 - Report of investigations (United States. Bureau of Mines)  8414. .
<br/><br/>Bibliography: p. 12. 
<br/><br/><label>LCCN: </label>79607970  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rock mechanics--Statistical methods.<br/>Boring<br/>Least squares.
<br/><br/><label>LC Class. No.: </label>TN23  TA706  / .U43 no. 8414 
<br/><br/><label>Dewey Class. No.: </label>622/.08 s  624/.1513 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 28.23:8414