Projects for a healthy planet simple environmental experiments for kids

Projects designed to help us understand causes of pollution, to protect our resources, and to create environmentally friendly products.

Detalles Bibliográficos
Autor Principal: Levine, Shar 1953-
Outros autores: Chui, Terry, Grafton, Allison
Formato: Libro
Idioma:inglés
Publicado: New York Wiley c1992.
Subjects: