special astrophysical observatory the russian academy sciences arkhyz azimuth telescope bta |
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| navigate by keyword : special astrophysical observatory russian academy sciences arkhyz azimuth telescope bta astronomy astronomical mirror technology atmosphere space radio radar caucasus scenic industrial |
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| Special astrophysical observatory of the Russian academy of sciences in Arkhyz. Azimuth telescope BTA, astronomy, astronomical, mirror, technology, atmospheric, atmosphere, space, radio, radar, caucasus, scenic, industrial |
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