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Date: 2009-05-14 06:11:47Oil wells Petroleum geology Drilling fluid Water wells Petroleum engineering Drilling rig Borehole Casing Pump Drill bit Mud pump Drilling | Impressum First edition: 2001, 1000 copies Author:Add to Reading ListSource URL: www.watersanitationhygiene.orgDownload Document from Source WebsiteFile Size: 3,33 MBShare Document on Facebook |