Percussion drilling rigs and tools for shallow water wells,
Jennings, William Munro.
Percussion drilling rigs and tools for shallow water wells, by W. M. Jennings. - London, The Technical Press ltd., 1934. - xii, 91 p. illus., diagrs. 22 cm.
Advertising matter: p. ii, vi, 87-91.
Drilling and boring machinery.
Wells.
MCE
628.952 / JEN
Percussion drilling rigs and tools for shallow water wells, by W. M. Jennings. - London, The Technical Press ltd., 1934. - xii, 91 p. illus., diagrs. 22 cm.
Advertising matter: p. ii, vi, 87-91.
Drilling and boring machinery.
Wells.
MCE
628.952 / JEN