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	1.	No cover image available Estudio geológico de la Cordillera Occidental del Norte del Perú by Cobbing, Edwin John Pitcher, Wallace Spencer Wilson, John Baldock, John Taylor, William Mc Court, William Snelling, N Material type: Article; Format: print Language: Spa In: Boletín del Instituto geológico minero y metalúrgico. Serie D: estudios especiales 10, 1981, 252 p: : ill., carte, carte h. t., graph., tab. Availability: No items available.
	2.	No cover image available Edades potasio-argón de las rocas ígneas y la mineralización de parte de la Cordillera Oriental, Bolivia by Grant, J Hall, H Avila-Salinas, Waldo Snelling, N Material type: Article; Format: print Language: Spa In: Boletín del Servicio geológico de Bolivia 1(1), serie A, 1977, p. 33-60: : carte, graph., tab. Availability: No items available.
	3.	No cover image available Age and isotope studies on the arena granites of S.W : Uganda by Vernon-Chamberlain, Valerie Snelling, N Series: Annales - Série in-8: sciences géologiques, 73 Material type: Text; Format: print ; Literary form: Not fiction Language: Eng Publication details: Tervuren : Musée Royal de l'Afrique Centrale, 1972 Availability: No items available.
	4.	No cover image available Age determinations from Andean Peru : a reconnaissance survey by Stewart, James Evernden, J Snelling, N Material type: Article; Format: print Language: Eng Geological society of America bulletin 85, 1974, p. 1107-1116: : carte, graph., tab. Availability: Items available for loan: Biblioteca IFEA (1)Call number: Am.GeolS-62. Place hold

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