Produkt mají v nabídce:
Peter's Railway a Bit of Energy - Vine, Christopher G. C.
A technical story book - Grandpa tries to answer a tricky question. "Where does the little steam train get its energy from?" A simple lump of coal from the time of dinosaurs!!! This wonderful story of energy conversion is just perfect for those with inquisitive minds. It even covers photosynthesis. Age 6-12.
