A Comparative Study of Vorticella Sp. and Hydra at Various Depths in A Fresh Water Lake

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Date
1969-08
Author
Allenstein, Gary G.
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Subject
 Freshwater--Pollution--Ecological aspects; Hydra--Ecological aspects; Vorticella--Ecological aspects; Freshwater plants 
Description
30 leaves
URI
http://hdl.handle.net/2092/1225
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