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	1.	No cover image available Correlación del horizonte calcáreo de Miraflores con el de Ayabacas by Ahlfeld, Federico Convención boliviana de geólogos, geofísicos e ingenieros petroleros, 1 ( 15-21 déc. 1958 : La Paz) Material type: Article; Format: print Language: Spa In: Boletín técnico (Yacimientos petrolíferos fiscales bolivianos) 1(3), 1959, p. 7-12: : carte Availability: No items available.
	2.	No cover image available Problemas de sedimentación en el altiplano by Ahlfeld, Federico Material type: Article; Format: print Language: Spa In: Boletín del Instituto boliviano del petróleo 3(2), 1962, p. 7-9 Availability: No items available.
	3.	No cover image available La línea geotectónica Ichilo by Ahlfeld, Federico Material type: Article; Format: print Language: Spa In: Boletín del Instituto boliviano del petróleo 7(2), 1967, p. 7-13: : carte Availability: No items available.
	4.	No cover image available Investigaciones geológicas en Ayopaya by Ahlfeld, Federico Material type: Article; Format: print Language: Spa In: Boletín del Instituto boliviano del petróleo 5(3-4), 1965, p. 52-62: : carte Availability: No items available.
	5.	No cover image available Rocas alcalinas y sodalita de Ayopaya by Ahlfeld, Federico Convención nacional de geología, 4 ( Mai, 1974 : Santa Cruz de la Sierra) Material type: Article; Format: print Language: Spa In: Revista técnica de yacimientos petrolíferos fiscales bolivianos 4(3), 1975, p. 631-635 Availability: No items available.
	6.	No cover image available La edad de la serie Jacadigo by Ahlfeld, Federico Convención nacional de geología, 3 ( 29-31 janvier 1973 : La Paz) Series: Boletín, 20 Material type: Article; Format: print ; Literary form: Not fiction Language: Spa In: Anales de la III Convención nacional de geología p. 19-21 Availability: No items available.
	7.	No cover image available Paraguay by Ahlfeld, Federico Hoffstetter, Robert [dir] Congrès géologique international, 20 ( 1956 : Mexico) Series: Lexique stratigraphique international, 5 Material type: Article; Format: print ; Literary form: Not fiction Language: Spa In: Amérique Latine : Paraguay - Falkland islands p. 1-31 : carte Availability: Items available for loan: Biblioteca IFEA (1)Call number: Am.Geol4j. Place hold
	8.	No cover image available Geografía física de Bolivia by Ahlfeld, Federico Series: Enciclopedia boliviana Edition: 2 Material type: Text; Format: print ; Literary form: Not fiction Language: Spa Publication details: <La paz : <Los> amigos del libro, 1973 Availability: Items available for loan: Biblioteca IFEA (1)Call number: Am.Geog.Phys46. Place hold
	9.	No cover image available Geología de Bolivia by Ahlfeld, Federico Branisa, Leonardo Material type: Text; Format: print ; Literary form: Not fiction Language: Spa Publication details: La Paz : Instituto Boliviano del Petróleo, 1960 Availability: Items available for loan: Biblioteca IFEA (1)Call number: Am.Geol72. Place hold
	10.	No cover image available Geología de Bolivia by Ahlfeld, Federico Material type: Text; Format: print ; Literary form: Not fiction Language: Spa Publication details: La Paz : Los amigos del libro, 1972 Availability: Items available for loan: Biblioteca IFEA (1)Call number: Am.Geol34. Place hold
	11.	No cover image available Los yacimientos minerales y de hidrocarburos de Bolivia by Ahlfeld, Federico Schneider-Scherbina, Alejandro Series: Boletín, 5 Material type: Text; Format: print ; Literary form: Not fiction Language: Spa Publication details: La Paz : Ministerio de minas y petróleo-Departamento nacional de geología, 1964 Availability: Items available for loan: Biblioteca IFEA (1)Call number: Am.Geol182. Place hold

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