Torthaí cuardaigh - "Obsidian"
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1
Obsidian analyses and prehistoric Near Eastern trade 7500 to 3500 B. C.
Foilsithe / Cruthaithe 1969LEABHAR -
2
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3
Obsidian geology and archaeology in the North American southwest
Foilsithe / Cruthaithe 2005LEABHAR -
4


