TY  - BOOK
AU  - Willoughby, David A.
TI  - Horizontal directional drilling: utility and pipeline applications 
SN  - 007145473X
PY  - 2005///
CY  - New York
PB  - McGraw-Hill
KW  - Directional drilling
KW  - Horizontal oil well drilling
KW  - Horizontal gas well drilling
N1  - Includes index
ER  -