350 books • 57 series
Jigsaw Continents (Science is what & why)
The Story of Folk Music
Time After Time (Science is What and Why Books)
Consumer Protection Labs
Pollution Lab (His Scientists at Work)
Oceanography Lab (His Scientists at Work)
Enzymes in Action
Triumphs of Modern Science
Snakes Live in Grass
Polar Bears Live on Ice
Bees Live in Hives
Baboons Waited on Tables in Ancient Egypt (Strange World)
101 Wacky Science Jokes
All about Seeds (Do-It-Yourself Science)