1576 20160222141730.0 SISMOimport-90 De Becker, Martine 1988 Studies of earthquakes on the basis of historical seismograms in Belgium Camelbeeck, Thierry Historical seismograms and earthquakes of the world, Academic Press H.K.Lee, H.Meyers and K.Shimazaki (eds.) 978-0124408708 BOOKSECT