31 enero 2009. de Sally M. Walker y Roseann Feldmann . Palancas = Levers (Libros De Fisica Para Madrugadores / Early Bird Physics). enero 2009. de Sally Palancas / Levers: Sally M. Walker, Roseann Feldmann, Andy King: Amazon.com.mx: Libros. Uses everyday materials to show how levers function as simple machines that help Sally M. Walker has been a children's book writer for over 20 years. Libros de F sica para Madrugadores (Early Bird Physics) Series Palancas/levers (Libros De Fisica Para Madrugadores) (Spanish Edition). Sally M. Walker, Rosann Feldmann, Andy King (Photographer). 2 valoraciones por Palancas/levers (Libros De Fisica Para Madrugadores) (Spanish Edition) by Sally M. Walker (2005-09-03): Sally M. Walker, Rosann Feldmann: Palancas Levers Libros de fisica para madrugadores: Amazon.es: Sally M. Walker, Rosann Feldmann, Andy King: Libros. Sally M. Walker, Roseann Feldmann agradece al programa Minneapolis Kids por su ayuda en la preparación de este libro. Levers — [uvenile literature. Palancas/levers by Sally M. Walker, Rosann Feldmann. (9780822529729) -Autor: Sally M. Walker -Código: 822529726 -Descripción: Uses everyday materials to show how levers function as simple machines that help make work easier.
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