North-West European thecate hydroids and their Medusae: part 1 introduction, Laodiceidae to Haleciidae: keys and notes for identification of the species
Cornelius, P.F.S. (1995). North-West European thecate hydroids and their Medusae: part 1 introduction, Laodiceidae to Haleciidae: keys and notes for identification of the species. Synopses of the British Fauna, N.S. 50. Field Studies Council: Shrewsbury. ISBN 1-85153-254-4. VII, 347 pp.
Part of: Barnes, R.S.K.; Crothers, J.H. (Ed.) Synopses of the British Fauna. Linnean Society of London: London; New York. ISSN 0082-1101
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