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The use of geophysical surveying methods in the detection of natural cavities and mineshafts

By: Contributor(s): Language: English Series: Quarterly Journal of Engineering Geology ; 20 1987, 59-73(15)Publication details: 1987Subject(s): Summary: Citation from CSM article `Detecting mineshafts using geophysical techniques` CSM:M 3(1) September 1993, 4-6. Stored on gallery.