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== Enllaços externs ==
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* [http://muse.jhu.edu/journals/technology_and_culture/toc/tech44.1.html ''Technology and Culture'' Volume 44, Number 1, January 2003 (PDF)] Dalley, Stephanie. Oleson, John Peter. "Sennacherib, Archimedes, and the Water Screw: The Context of Invention in the Ancient World"
* [http://www.mcs.drexel.edu/~crorres/screw/screw.pdf ''The Turn of the Screw: Optimal Design of an Archimedes Screw'', by Chris Rorres, PhD.'']
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