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Paperback
2003 – An Inclined Plane (Paperback) Armentrout, David Factory Shop
eBook
2010 – Inclined Planes (eBook) Armentrout, David Factory Shop
2020 – Simple Machines (eBook) Marla Conn Factory Shop
Hardback
2020 – Simple Machines (Hardback) Marla Conn Factory Shop
2020 – Simple Machines (Paperback) Marla Conn Factory Shop
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