Ritsema, A.Reinier. Seismicity and seismic risk in the offshore north sea area / edited by A Reinier Ritsema,Aybars Gurpinar. - 1st.Edn. / - Dordrecht : D.Reidel Publishibg Company , 1985 - xxiv,420p : ISBN: 90-277-1529-7 Subjects--Topical Terms: North Sea Area Dewey Class. No.: H4332p596,N82 / M3