Effects of sewage on bryozoan diversity in Mediterranean rocky bottoms. In: Wyse Jackson, P.N., Buttler, C.J. & Spencer-Jones, M. (eds), Bryozoan Studies 2001: 151-158. A.A. Balkema Publishers, Lisse, Abingdon, Exton, Tokyo. - Harmelin, J.-G.; Capo, S. (In: Wyse Jackson, P.N., Buttler, C.J. & Spencer-Jones, M. (editors), Bryozoan Studies 2001: 151-158. A.A. Balkema Publishers, Lisse, Abingdon, Exton, Tokyo, 2002)