Trabajo
By: por Sally M. Walker y Roseann Feldmann ; fotografías de Andy King.
Contributors: Feldmann, Roseann.; King, Andy, ill.
Series: Libros de fisica para madrugadores
Publisher: Lerner
Published: 2006
Place of publication: Minneapolis
Language: eng
ISBN-13: 9780822529842
Subjects: Work (Mechanics) -- Juvenile literature; Simple machines -- Juvenile literature
Genres: Juvenile literature.
Notes: Includes index.