A key to the nymphs of the British species of Ephemeroptera : with notes on their ecology /
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| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
[Ambleside, England] :
[Freshwater Biological Association],
1961.
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| Series: | Scientific publication (Freshwater Biological Association) ;
no. 20. |
| Subjects: |
| Physical Description: | 63 pages : illustrations, maps ; 22 cm. |
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