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![Sold at Auction: [First book of German nudism pioneer. Nudity : The nudity : in evolutionary, health-related moral and artistic illumination]. Ungewitter, R. Die Nacktheit ... . - [3rd ed.]. - Stuttgart:](https://i0.wp.com/image.invaluable.com/housePhotos/Artmaximum/16/751816/H21145-L340109544.jpg?ssl=1)
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