TY  - BOOK
AU  - Duvall,Wilbur I.
AU  - Aggson,James R.
ED  - United States
TI  - Least squares calculation of horizontal stress from more than three diametral deformations in vertical boreholes
T2  - Report of investigations
AV  - TN23TA706 .U43 no. 8414
U1  - 622/.08 s624/.1513 
PY  - 1980/// [i.e. 1979]
CY  - [Washington]
PB  - Dept. of the Interior, Bureau of Mines
KW  - Rock mechanics
KW  - Statistical methods
KW  - Local
KW  - Boring
KW  - Least squares
N1  - Bibliography: p. 12
ER  -