论文信息 - Sheet Explanations of the British Geological Survey: 1:50 000 sheets. 32–36 pp. £9.00. Sheet Descriptions of the British Geological Survey: 1:50 000 sheets. £15.00–£25.00. Keyworth, Nottingham: British Geological Survey. - 字舞流文

Sheet Explanations of the British Geological Survey: 1:50 000 sheets. 32–36 pp. £9.00. Sheet Descriptions of the British Geological Survey: 1:50 000 sheets. £15.00–£25.00. Keyworth, Nottingham: British Geological Survey.