Translations:Adventist Youth Honors Answer Book/Health and Science/Optics/59/es
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Revision as of 05:31, 4 December 2014 by W126jep(talk | contribs)(Created page with "==9. Construir un instrumento óptico usando espejos o lentes, como un periscopio, una diapositiva o proyector de opacos o un simple telescopio.==")