"The beloved "Erwin" doll, hero of the popular Prof. Dietrich Grönemeyer’s children’s book series, Erwin and Rosi, teaches even the smallest children everything they need to know about their bodies. It comes with a little booklet explaining the function of each organ. All organs are color-coded, making it easy to assemble the little patient. This is a great toy for little kids playing pretend doctor. "
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Buy Erwin and Rossi book