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Brockhaus and Efron Encyclopedic Dictionary . Illustration from Brockhaus and Efron Encyclopedic Dictionary reproducrion from DVD iddk ru html Georg Neumayer Berghaus' Pbysikal Atlas Erdmagnetismus between Georg Neumayer PDBrockhaus Efron PDRusEmpire PDBrockhaus Efron Maps Magnetic field maps of the world Maps from Brockhaus