229 books • 93 series
Who Invented the Movie Camera? (Stem Smackdown (Alternator Books (R) )) (STEM Smackdown (Alternator Books (TM)))
Who Invented the Television? (Stem Smackdown (Alternator Books (R) )) (STEM Smackdown (Alternator Books (TM)))
Mysteries of the Great Wall of China (Ancient Mysteries) (Ancient Mysteries (Alternator Books (R) ))
Mysteries of the Egyptian Pyramids (Ancient Mysteries (Alternator Books (R) )) (Ancient Mysteries)
Forces and Motion Investigations (Key Questions in Physical Science (Alternator Books (R) ))
Sound and Light Waves Investigations (Key Questions in Physical Science (Alternator Books (R) ))
States of Matter Investigations (Key Questions in Physical Science (Alternator Books (R) ))
Spine-Tingling Urban Legends (Searchlight Books (TM) -- Fear Fest) (Searchlight Fear Feast)