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Williams's Hydraulic Theory to Cheops's Pyramid (Popularity: )
Describes Williams's Hydraulic Theory to the construction of the Great Pyramid of Egypt, otherwise known ...
Category: Science\Social Sciences\Archaeology\Alternative
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National Speleological Society (Popularity: )
Advancing the study, conservation, exploration, and knowledge of caves. Although primary focus is on recreation, ...
Category: Science\Earth Sciences\Geology\Geomorphology
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Subterranea Britannica (Popularity: )
A society for those interested in man-made and man-used underground space - from deneholes to ...
Category: Science\Social Sciences\Archaeology\Organizations
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