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von Aufsess, Otto: 



1913. (Seeing under water. How things look from a fish's point 

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Vioueron, H.: 



1913. La Vision dans l'eau. La Nature, Ann. 42, Sem. 1, pp. 8-10. 

 7 figs. 



Wood, R. W.: 



1905. Physical optics (Chapter 3 refraction). New York, pp. 

 VI-546. 



1906. Fish-eye views and vision under water. Philosophical Maga- 

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