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On the Nature and Formation of Radioactive Hydrocarbons From the Ordovician Rocks of the Ottawa area; Charbonneau, B W;
Jonasson, I R; Ford, K L; in,
Report of Activities Part B. Geological Survey of Canada, Paper no. 77-1B, 1977 p. 109-111,
https://doi.org/10.4095/102765 
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