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Studien über angeborene Farbenblindheit
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Die Gesichts-empfindungen und ihre Analyse
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Colour-blindness and Colour-perception
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Farbenlehre. Der "Functionsprüfung" erster Theil
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The Colour-sense: Its Origin and Development: An Essay in ...
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The Colour-sense: Its Origin and Development: An Essay in ...
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Colour-blindness: With a Comparison of Different Methods of ...
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Researches on Colour-blindness: With a Supplement on the ...
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Om färgblindheten i dess förhållande till jernvägstrafiken ...
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