00588cam a22001691 4500 628.952 JEN L-24, P-12 Jennings, William Munro. 42068 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. 0 0 0 628_952000000000000_JEN Drilling and boring machinery. 26987 MCE 379 Wells. 25107 ddc BK 546052 546052 0 0 ddc 0 0 MCE MCE 2014-06-02 0 628.952 JEN MCE-40813 2014-06-02 2014-06-02 BK