(Q56103845)
Statements
XXIV.—On the animal and operculum of Georissa, W. Blanf., and on its relations to Hydrocena, Parreyss; with a note on Hydrocena tersa, Bens., and H. milium, Bens. (English)
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March 1869Gregorian
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3
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15
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173–179
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