Los porqués de nuestro mundo.

Questions and answers present information on science topics, including human physiology, animal behavior, earth science, and natural science.

Bibliographic Details
Uniform Title:	Why on earth?.
Corporate Author:	National Geographic Society (U.S.)
Format:	Book
Language:	Spanish English
Published:	Washington, D.C. : Charlotte, N.C. : National Geographic Society ; Stampley Enterprises, [1993]
Series:	Colección Explora y aprende.
Subjects:	Science > Miscellanea > Juvenile literature. Children's questions and answers > Juvenile literature. Science > Miscellanea. Questions and answers. Ciencia > Miscellanea > Literatura juvenil. Preguntas y respuestas para niños > Literatura juvenil. Ciencia > Miscelánea. Preguntas y respuestas.