Science, Design, Architecture, Geology, Archeology.
References Bachler, K. : Earth Radiation, John Living, 1976 Bergsmann, O. : Risikofaktor Standort. Vienna, Facultas University Press, 1990 Burke, J., Halberg, K. : Seed of Knowledge, Stone of Plenty: Understanding the Lost Technology of the Ancient Megalith-Builders, Council Oak Books, 2005 Cook,