Superman Science
144 pages : 23 cm
MusclesHuman physiology, juvenile literatureMuscles, juvenile literatureSuperman (Fictitious character) -- Miscellanea -- Juvenile literatureSuperman (Fictitious character) -- MiscellaneaSuperman (Fictitious character)Muscle strength -- Juvenile literatureHuman physiology -- Juvenile literatureGreat powers -- Juvenile literatureMuscle strengthHuman physiologyGreat powers