|
USA | |
| King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey. |
| Williams, Henry S. and Gregory, Herbert E. (1900) Contributions to the Geology of Maine, U. S. Geological Survey Bulletin 165, pp 212. |
| Boucot, Arthur J., Field, Michael T., Fletcher, Raymond, Forbes, William H., Naylor, Richard S., and Pavlides, Louis (1964) Reconnaissance Bedrock Geology of the Presque Isle Quadrangle, Maine, Quadrangle Mapping Series 2, Department of Economic Development, Augusta, Maine, pp 123 + plate. |
| Williams, Henry S. and Gregory, Herbert E. (1900) Contributions to the Geology of Maine, U. S. Geological Survey Bulletin 165, pp 212. |
| Pavlides, Louis and Milton, Charles, 1962, Geology and Manganese Deposits of the Maple and Hovey Mountains Area, Aroostook County, Maine, U. S. Geological Survey Professional Paper 362, pp. 116 + plates. |
| Pavlides, Louis and Milton, Charles, 1962, Geology and Manganese Deposits of the Maple and Hovey Mountains Area, Aroostook County, Maine, U. S. Geological Survey Professional Paper 362, pp. 116 + plates. |
| Pavlides, Louis and Milton, Charles, 1962, Geology and Manganese Deposits of the Maple and Hovey Mountains Area, Aroostook County, Maine, U. S. Geological Survey Professional Paper 362, pp. 116 + plates. |
| Pavlides, Louis and Milton, Charles, 1962, Geology and Manganese Deposits of the Maple and Hovey Mountains Area, Aroostook County, Maine, U. S. Geological Survey Professional Paper 362, pp. 116 + plates. |
| Pavlides, Louis and Milton, Charles, 1962, Geology and Manganese Deposits of the Maple and Hovey Mountains Area, Aroostook County, Maine, U. S. Geological Survey Professional Paper 362, pp. 116 + plates. |
| Pavlides, Louis and Milton, Charles, 1962, Geology and Manganese Deposits of the Maple and Hovey Mountains Area, Aroostook County, Maine, U. S. Geological Survey Professional Paper 362, pp. 116 + plates. |
| Williams, Henry S. and Gregory, Herbert E. (1900) Contributions to the Geology of Maine, U. S. Geological Survey Bulletin 165, pp 212. |