North-West European athecate hydroids and their medusae
Schuchert, P. (2012). North-West European athecate hydroids and their medusae. Synopses of the British Fauna, N.S. 59. Field Studies Council: Telford. ISBN 978-1-908819-01-7. viii, 364 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, more
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