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.

Opis bibliograficzny
1. autor: Levine, Shar 1953-
Kolejni autorzy: Chui, Terry, Grafton, Allison
Format: Książka
Język:English
Wydane: New York Wiley c1992.
Hasła przedmiotowe: