112 books • 35 series
Exploring Weather: Meteorologists at Work! (Earth Detectives)
Exploring Minerals: Mineralogists at Work! (Earth Detectives)
Levi Strauss: Blue Jean Genius (First in Fashion)
Drones (Modern Engineering Marvels)
Modern Engineering Marvels (Set) (Modern Engineering Marvels)
First in Fashion (Set) (First in Fashion)
Building the Empire State Building (Engineering Marvels)
Engineering Super Structures (Set) (Engineering Super Structures)
Engineering Marvels (Set) (Engineering Marvels)
Building the Golden Gate Bridge (Engineering Marvels)
Building the Hoover Dam (Engineering Marvels)
Dams (Engineering Super Structures)
Are You Psychic? (Mind Games)
Dreams and What They Mean (Mind Games)
Astrological Signs (Mind Games)
Memory Fun (Mind Games)