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Reduction factors for underground traversing
Underground traversing on Witwatersrand Goldfields and National Survey Systems; method of applying correction to measured distances to get corresponding distances used for coordinate calculation; tables for projection distortion and correction for elevation.
Reduction factors for underground traversing
Underground traversing on Witwatersrand Goldfields and National Survey Systems; method of applying correction to measured distances to get corresponding distances used for coordinate calculation; tables for projection distortion and correction for elevation.
Reduction factors for underground traversing
Inst Mine Surveyors S Africa -- J
Freislich, J.G. (author)
1958
7 pages
Article (Journal)
English
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