About John Daniel Hartzog
John Daniel Hartzog is a published author of children's books. Some of the published credits of John Daniel Hartzog include Everyday Science Experiments in the Kitchen, Everyday Science Experiments in the Backyard (Hartzog, Daniel. Science Surprises.), Everyday Science Experiments in the Playground (Hartzog, Daniel. Science Surprises.).To edit or update the above biography on John Daniel Hartzog, please Log In or Register.
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Published Works by John Daniel HartzogClick a book's title or cover for more details and to read reviews