Maschinen - Dr. F. Krantz, Rheinisches Mineralien-Kontor, Orffyreus Returns,

		Saturday, 11 October, 2008
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Dr. F. Krantz, Rheinisches Mineralien-Kontor (Popularity: )

Buying and selling collections (rocks, minerals, fossils). Also sells specimens, field equipment, and teaching aids ...
Category: Science\Earth Sciences\Geology\Instruments and Supplies

Orffyreus Returns (Popularity: )

Historical research and information on Johann Bessler, aka Orffyreus, and his demonstration of a series ...
Category: Science\Technology\Energy\Unproven Concepts

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