A pair of strabismus diagnostic and exercise cards in black and white. The card to the left, 6, has the image of a branch of a cherry tree with 2 cherries and a bee to the left of the cherries; the card to the right, 6a, has the image of a branch of a cherry tree with 2 cherries and a bee over the branch. Stereoskopische Bilder für schielende Kinder.
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Related Title(s):
Hidden treasure and Is part of: Stereoskopische Bilder für schielende Kinder.; See related catalog record: 52331180R