TY  - BOOK
AU  - W.M. Jennings
TI  - Percussion drilling rigs and tools for shallow water wells
U1  - 627.75 
PY  - 1934///
CY  - London
PB  - Technical Press Ltd
N1  - W.M. Jennings: Percussion drilling rigs and tools for shallow water wells.  London.  Technical Press Ltd, 1934.--(627.75JEN)
ER  -