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	1.	No cover image available The Middle Devonian rugose coral prismatophyllum conjunctum (Davis) and the age of the "Columbus" limestone at Ingersoll, Ontario by Oliver, William Jr Material type: Article; Format: print Language: Eng In: Geological Society of America bulletin 92(11), part I, 1981, p. 873-877: : ill., tab., rés.(Angl) Availability: No items available.
	2.	No cover image available Les minéralisations de Zn-Pb dans le Dévonien des Pyrénées centrales by Pouit, G Material type: Article; Format: print Language: Fre In: Principaux résultats scientifiques et techniques du Service géologique national , 1977, p. 97-98 Availability: No items available.

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