7 books • 5 series
F Is for Frog (E for Endangered) (ABCs of Endangered Amphibians)
B Is for Bees (E for Endangered)
E for Endangered (E for Endangered)
How Can We Reduce Transportation Pollution? (Searchlight Books (TM) -- What Can We Do about Pollution?)
Investigating Plant Life Cycles (Searchlight Books (TM) -- What Are Earth's Cycles?)
Investigating Animal Life Cycles (Searchlight Books (TM) -- What Are Earth's Cycles?)
Ancient Egypt (Ancient Civilizations)