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Waltham, A. C.; Dixon, N. (2000). "Movement of the Mam Tor landslide, Derbyshire, UK". Quarterly Journal of Engineering Geology and Hydrogeology. 33 (2): 105–123. Bibcode:2000QJEGH..33..105W. doi:10.1144/qjegh.33.2.105.
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Waltham, A. C.; Dixon, N. (2000). "Movement of the Mam Tor landslide, Derbyshire, UK". Quarterly Journal of Engineering Geology and Hydrogeology. 33 (2): 105–123. Bibcode:2000QJEGH..33..105W. doi:10.1144/qjegh.33.2.105.