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Lower and middle paleozoic biostratigraphy Gaspé, Québec and Maritime region; Dean, W T; in,
Report of activities, part A:
April to October 1972; Blackadar, R G (ed.) ; Geological Survey of Canada. Geological Survey of Canada, Paper no. 73-1A, 1973
p. 253-254,
https://doi.org/10.4095/124026 
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