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Dalhne Uber die Kaltebestandigkeit der Wasserwanzen Zeitschr f. 

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Dahl, F., 1884. Beitrage zur Kenntnis des Baues und der Funktionen 

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Delcourt, A., 1907. Quelques observations sur la variabilite de Noto- 

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Dexcourt, a., 190 — . Recherches sur la variabilite du genre Notonecta. 

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DiMMOCK, G., 1886. Belostoniatidae and other fish destroying bugs. In 

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Distant, W. L. Oriental Rhynchota Heteroptera. Ann Mag. Nat. Hist. 

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 Dog, Walter, 1909. Metamorphose der Respirations ortrane bei Nepa 



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plates. 

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27, pp. 321-352. 

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VI, 4-6. 

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London.) 

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