My first green book - Wilkes, Angela (New York : Knopf, 1991)
Keywords: Pollution -- Juvenile literature; Pollution -- Experiments -- Juvenile literature; Environmental protection -- Juvenile literature; Environmental protection -- Experiments -- Juvenile literature; Gardening -- Juvenile literature; Conservation of natural resources -- Juvenile literature; Pollution -- Experiments; Environmental protection -- Experiments; Conservation of natural resources -- Experiments; Experiments