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Эх, не летать нам на квадролётах...
Apr. 21st, 2014 02:55 pm"What Makes The Quadcopter Design So Great For Small Drones?"
http://www.forbes.com/sites/quora/2013/12/23/what-makes-the-quadcopter-design-so-great-for-small-drones/
http://www.forbes.com/sites/quora/2013/12/23/what-makes-the-quadcopter-design-so-great-for-small-drones/
