BIOTIC References
1721Fretter, V. & Graham, A., 1962. British Prosobranch Molluscs. London: Ray Society.
Search Google Scholar (click an authors name to search for other papers): Fretter, V. | Graham, A8877
Fretter, V. & Graham, A., 1962. British Prosobranch molluscs:their functional anatomy and ecology Ray Society, London
Search Google Scholar (click an authors name to search for other papers): Fretter, V. | Graham, A8934
Fretter, V., & Graham, A., 1962. British Prosobranch molluscs:their functional anatomy and ecology, Ray Society, London
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