Human biology
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662421 4
Set of images of optical phenomena
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662420
Examples to demonstrate optical and haptic illusions
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668381 4
LIT-print: Charts for examining the colour perception, German
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KLA110235 4
Ishihara test wallet for color vision disturbances
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KLA130110
Experiment set eye
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KLA130112
Working model of the human eye
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662402 4
Lens Model
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662427
Tactile circle
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6624251
Cold probe
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662429 4
Iron rod, set 2
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