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2
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Invertebrates in need of special protection in Europe / by N. Mark Collins and Susan M. Wells.
- 333.955094 C7121
- Collins, N. Mark.
- European Committee for the Conservation of Nature and Natural Resources,
- 1987.
- Strasbourg :
-
The biological significance and conservation of hymenoptera in Europe / by I.D. Gauld. N. Mark Collins, M.G. Fitton.
- 595.79094 G269
- Gauld, Ian David.
- Council of Europe,
- c 1990.
- Strasbourg :