TY  - BOOK
AU  - Willoughby, David A
TI  - Horizontal directional drilling : utility and pipeline applications
SN  - 9780071454735
SN  - 200529938
U1  - 622.3381 WIL 
PY  - 2005///
CY  - New York
PB  - McGraw-Hill
KW  - Directional drilling
KW  - Horizontal gas well drilling
KW  - Horizontal oil well drilling
N1  - Includes bibliographical references (p. 364-365) and index
ER  -