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	1.	No cover image available Las capas fosfáticas de la Cordillera Oriental by Bürgl, Hans Botero, Darío Material type: Article; Format: print Language: Spa In: Boletín geológico 15(1-3), 1967, p. 7-44 : ill., carte, graph., tab. Availability: No items available.
	2.	No cover image available Artefactos paleolíticos de una tumba en Garzón, Huila by Bürgl, Hans Material type: Article; Format: print Language: Spa In: Revista colombiana de antropología 6, 1957, p. 5-24: : ill. h. t., carte Availability: No items available.
	3.	No cover image available Historia geológica de Colombia by Bürgl, Hans Material type: Article; Format: print Language: Spa Revista de la academia colombiana de ciencias exactas, físicas y naturales 11, 1961, p. 141-191: : ill., carte, tab. Availability: Items available for loan: Biblioteca IFEA (1)Call number: Am.GeolB-45. Place hold
	4.	No cover image available Die rhythmischen bewegungen der kreidegeosynklinale der ostkordillere kolumbiens by Bürgl, Hans Material type: Article; Format: print Language: Ger Geologische rundschau 53, 1964, p. 706-730: : ill., carte, tab., rés.(All., Ang., Fre., Ru) Availability: Items available for loan: Biblioteca IFEA (1)Call number: Am.GeolB-44. Place hold

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