Hooper, J.N.A. (2002). Family Hemiasterellidae Lendenfeld, 1889. pp. 186-195 in: Hooper, J.N.A.; Van Soest, R.W.M. (Eds.). Systema Porifera: a guide to the classification of sponges. (Kluwer Academic/ Plenum Publishers: New York, Boston, Dordrecht, London, Moscow).
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Hooper, J.N.A.
2002
Family Hemiasterellidae Lendenfeld, 1889. pp. 186-195 <i>in</i>: Hooper, J.N.A.; Van Soest, R.W.M. (Eds.). Systema Porifera: a guide to the classification of sponges. (Kluwer Academic/ Plenum Publishers: New York, Boston, Dordrecht, London, Moscow)
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The PDF supplied here is a proof - NOT the definitive printed text - of a chapter of the Systema Porifera