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The Library of Congress. The National Union Catalog; acumulative author list representig Library of Congress printed cards and titles reported by other American libraries. Washington. The Library of Congress, 1970 1. 28 cm. Gran Enciclopedia del Mundo. Bao, Durvan, S.A. de Ediciones, 1965-70. 21 t. ilus ., láms ., mapas, parc. colors. 25 cm.