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vII. REFERENCES <br />• Fischer, Dennis W., 1981, Paleontological Inventory and <br />Assessment of the Durango and Cortez Knox+~r_ Reco~>erable Coal <br />Resource Areas: BLM Contract, 63 pages. <br />Zapp, A. D., 1949, Geology and Coal Resources of the Durango <br />Area, La Plata and Montezuma Counties, Colorado: U. S. <br />Geological Survey Oil and Gas Investigations Preliminary Map <br />109, 2 Sheets. <br />• <br />n <br />U <br />