Geology of the country around Chulmleigh : memoir 1:50,000 geological sheet 309 / (by) E.C. Freshney, K.E. Beer and J.E. Wright ; contributors ... (others). - Freshney, E. C. (Edward Cameron), 1935- (Memoirs of the geological survey of Great Britain, England and Wales Memoirs of the Geological Survey of Great Britain: England and Wales, 1979)