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Merton Yarwood Williams

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An eurypterid horizon in the Niagara formation of Ontario
Arisaig-Antigonish district, Nova Scotia
The Ordovician rocks of Lake Timiskaming
Arisaig-Antigonish District, Nova Scotia
The Ordovician Rocks of Lake Timiskaming (Classic Reprint)
The Ordovician Rocks of Lake Timiskaming [microform]
An Eurypterid Horizon in the Niagara Formation of Ontario (Classic Reprint)