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- [4] NEW DEVELOPMENTS IN DRILLING WERKSTATTSTECHNIK ZEITSCHRIFT FUR INDUSTRIELLE FERTIGUNG, 1979, 69 (12): : 771 - 776
- [5] DRILLING - POTENTIAL DEVELOPMENTS .1. DRILLING EQUIPMENT TRANSACTIONS OF THE INSTITUTION OF MINING AND METALLURGY SECTION B-APPLIED EARTH SCIENCE, 1986, 95 : B77 - B80
- [6] DRILLING - POTENTIAL DEVELOPMENTS: (1) DRILLING EQUIPMENT. Transactions of the Institution of Mining and Metallurgy, Section B: Applied Earth Science, 1985, 95 : 77 - 78
- [7] NEW DEVELOPMENTS IN ROCK DRILLING CANADIAN MINING AND METALLURGICAL BULLETIN, 1971, 64 (707): : 69 - &
- [9] ELECTRIC DRILLING RIG DEVELOPMENTS IEEE TRANSACTIONS ON INDUSTRY AND GENERAL APPLICATIONS, 1967, IGA3 (02): : 194 - &
- [10] OVERDRILLING AND DIRECT-DRILLING DEVELOPMENTS NEW ZEALAND JOURNAL OF AGRICULTURE, 1977, 135 (03): : 33 - &