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In aviation and aviation meteorology, a flight level ( FL) is an aircraft's altitude at standard air pressure, expressed in hundreds of feet.
The Encyclopaedia Iranica is a comprehensive research tool dedicated to the study of Iranian civilization in the Middle East, the Caucasus, Central Asia, and the Indian subcontinent.
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The Persian version of Wikipedia was started in December 2003. As of July 2024, it has 1,006,488 articles, 1,322,421 registered users, and 91,168 files, and it is the 19th largest edition of Wikipedia by article count, and ranks 22nd in terms of depth among Wikipedias.
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6 sie 2022 · Encyclopaedia Britannica - Volume 10.pdf download 92.1M Encyclopaedia Britannica - Volume 11.pdf download
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