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- [8] Geological research in Kentucky. A summary account of the several geological surveys of Kentucky, including a complete list of their publications and a general bibliography of 806 titles pertaining to Kentucky geology [J]. PETERMANNS MITTEILUNGEN, 1924, 70 (11-12): : 285 - 285
- [9] THE summary report of the Geological Survey Department of Canada [J]. JOURNAL OF GEOLOGY, 1902, 10 (08): : 913 - 917