Saber qué es y cómo es
By: [dirección editorial, Ramón Lleonart].
Contributors: Lleonart, Ramón.
Series: Enciclopedia fundamental ; v. 1
Publisher: A. Ortells Ferríz
Published: 1974
Place of publication: Valencia
Language: spa
Number of pages: 154
Subjects: Science -- Encyclopedias, Juvenile.
Notes: Includes index.