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Date: 2008-04-10 18:08:10Measuring instruments Cave surveying Surveying Cave survey Navigation British Cave Research Association Inclinometer Compass Magnetometer Technology Cartography Electromagnetism | ISSN: [removed]Issue 39 March 2008Add to Reading ListSource URL: www.chaos.org.ukDownload Document from Source WebsiteFile Size: 3,53 MBShare Document on Facebook |