Los engranes
By: escrito por Harlan Wade ; adaptación al español por Mamie M. Contreras ; conceptos e ilus. por Denis Wrigley.
Contributors: Wrigley, Denis.
Series: His Un libro sobre
Publisher: Raintree Childrens Books
Published: 1979
Place of publication: Milwaukee
Language: spa
Number of pages: 32
Subjects: Gearing -- Juvenile literature; Gearing; Spanish language materials
Description: A simple explanation of gears and what they do.
Notes: Translation of Gears.