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	1.	No cover image available K-Ar dating young rhyolitic rocks : a case study of the Sierra La Primavera, Jalisco, Mexico by Mahood, Gail Drake, Robert Material type: Article; Format: print Language: Eng In: Geological Society of America bulletin 93(12), 1982, p. 1232-1241: : ill., graph., tab., rés.(Angl) Availability: No items available.
	2.	No cover image available The Loma Seca Tuff and the Calabozos caldera : a major ash-flow and caldera complex in the southern Andes of central Chile by Hildreth, Wes Grunder, Anita Drake, Robert Material type: Article; Format: print Language: Eng In: Geological Society of America bulletin 95(1), 1984, p. 45-54: : ill., carte, tab., rés.(Angl) Availability: No items available.
	3.	No cover image available Calibration of the beginning of the age of mammals in Patagonia by Marshall, Larry Butler, Robert Drake, Robert Curtis, Garniss Material type: Article; Format: print Language: En Science 212, 1981, p. 43-45: : ill., carte Availability: Items available for loan: Biblioteca IFEA (1)Call number: Am.PaleoM-2. Place hold

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