Analysis of the Toompea hill subsidence

Pastarus, J.-R. Analysis of the Toompea hill subsidence // ProGEO '97. Brochure of abstracts : the Second General Assembly of the European Association for the Conservation of the Geological Heritage : scientific conference : Tallinn-Lahemaa National Park, June 2nd-4th, 1997. Tallinn, 1997. p. 43.