British ascophoran bryozoans. Keys and notes for the identification of the species
Hayward, P.J.; Ryland, J.S. (1979). British ascophoran bryozoans. Keys and notes for the identification of the species. Synopses of the British Fauna, N.S. 14. Academic Press: London, New York and San Francisco. ISBN 0-12-335050-6. 312 pp.
Deel van: Barnes, R.S.K.; Crothers, J.H. (Ed.) Synopses of the British Fauna. Linnean Society of London: London; New York. ISSN 0082-1101, meer
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