(1970). In situ investigations in soils and rocks: Proceedings of the Conference organized by the British Geotechnical Society in London, 13-15 May, 1969. London: British Geotechnical Society.
Παραπομπή Chicago StyleIn Situ Investigations in Soils and Rocks: Proceedings of the Conference Organized By the British Geotechnical Society in London, 13-15 May, 1969. London: British Geotechnical Society, 1970.
Παραπομπή MLAIn Situ Investigations in Soils and Rocks: Proceedings of the Conference Organized By the British Geotechnical Society in London, 13-15 May, 1969. London: British Geotechnical Society, 1970.
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