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Technology / Infrastructure / Water wells / Drilling rig / Petroleum engineering / Petroleum geology / Appropriate technology / Borehole / Oil well / Drilling fluid / Sludging / Drill


G WATER RESOURCES: ELSON 20th WEDC Conference Colombo, Sri Lanka, 1994
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Document Date: 2009-05-14 07:36:05


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File Size: 80,31 KB

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