Echinoderms: keys and notes for the identification of British species
Southward, E.C.; Campbell, A.C. (2006). Echinoderms: keys and notes for the identification of British species. Synopses of the British Fauna, N.S. 56. Field Studies Council: Shrewsbury. ISBN 1-85153-269-2. 272 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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