TY  - BOOK
AU  - William C.Lyons
TI  - Working guide to drilling equipment and operations
SN  - 978-1-85617-843-3
AV  - TJ1260.L96 
PY  - 2010///
CY  - London
PB  - Elsevier
KW  - Drilling and boring machinery
N1  - Includes bibliographical references and index
ER  -