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Surficial geology and sun-illuminated seafloor topography, Mitchells Trough sponge reef complex, offshore British Columbia;
Conway, K W; Barrie, J V
; Lawson, F; Krautter, M.
Geological Survey of Canada, "A" Series Map 2137A, 2008, 1 sheet,
https://doi.org/10.4095/225992 
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