WOGOGOB-2004 : 8th Meeting of the Working Group on the Ordovician Geology of Baltoscandia : May 13-18, 2004, Tallinn and Tartu, Estonia : conference materials : abstracts and field guidebook
Institut of Geology, University of Tartu [and] Institut of Geology at Tallinn University of Technology [and] Geological Survey of Estonia ; edited by O.Hints and L.Ainsaar