Avances científicos más notables del siglo XX
By: dirección general, María Eloísa Alvarez del Real.
Contributors: Alvarez del Real, María Eloísa.
Publisher: Editorial América
Published: 1991
Place of publication: Panamá, Rep. de Panamá
Language: spa
Subjects: Science -- History -- 20th century -- Chronology.; Technology -- History -- 20th century -- Chronology.
Notes: Includes bibliographical references (p. 5-6).
Table of contents: title: t. 1. Aviación. Helicóptero. Ferrocarril. Navegación. Automóvil. Cine. Medicina. Biología