741. Boletín oficial de la Bolsa de Comercio

742. Bolívar

743. Bolivia Visita del Presidente de la Nación Argentina Dr. Arturo Frondizi

744. Bolivia, Chaco Boreal

745. La Bolsa de Comercio

746. Bom Abrigo Island to Arvoredo Island

747. Bomba

748. Bomba

749. Bombear ...

750. [Bomberos extinguiendo un incendio en la Algodonera Argentina, Colegiales, 07/06/1949]

751. Bonpland

752. Borde de un ventisquero (Terr. Santa Cruz)

753. Borges : el mismo, otro : una lógica simbólica : manuscritos de Jorge Luis Borges en la Biblioteca Nacional

754. Borges en Revista Multicolor : obras, reseñas y traducciones inéditas de Jorge Luis Borges : diario Crítica, Revista Multicolor de los sábados, 1933 1934

755. Borges lector

756. Borges profesor : curso de literatura inglesa en la Universidad de Buenos Aires

757. Borges, Homero y el inicio de la escritura

758. Boston Bay and approaches

759. Bowles's New four sheet Map of the World on Mercator's Projection exhibiting the Several Quarters of the Globe, divided into their respective Empires, Kingdoms, States, &c., agreeable to the latest Treaties and Political Regulations now existing : together with all the New Discoveries and most interesting Tracks of those eminent Circumnavigators Cook, Byron, Bougainville, Perouse, Vancouver &c

760. Bowles's new plan of the cities of London and Westminster with the Borough of Southwark comprehending the new buildings and other alterations to the year 1793