(Phys.org)—The sun's energy is virtually limitless, but harnessing its electricity with today's single-crystal silicon solar cells is extremely expensive—10 times pricier than coal, according to some ...
"Contains all the plates from the work Les eléments de l'art arabe : le trait des entrelacs, by J. Bourgoin, originally published by the Librarie de Firmin-Didot et Cie, Paris, in 1879"--T.p. verso.
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