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National Science Foundation on Twitter: "Arecibo observatory in Puerto Rico is world-famous. The 1000 foot diameter radio dish has been used for all kinds of amazing experiments and discoveries—including the first observations
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Bohemian Fantasy spol. s r.o.- Cestovní kancelář Olomouc | Portoriko A Florida - Okruhy Po Portoriku A Floridě - Portoriko
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