Apple Announces Digital Textbooks Service At Guggenheim. [Photography]. Retrieved from Encyclopædia Britannica ImageQuest.
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Korey. (2017). Best drones for sale and why. Retrieved from http://myfirstdrone.com/tutorials/buying-guides/best-drones-for- sale/#camera_drones_index
Unmanned aerial vehicle competition. [Photograph]. Retrieved from Encyclopædia Britannica ImageQuest.
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http://quest.eb.com/search/115_3928124/1/115_3928124/cite
Korey. (2017). Best drones for sale and why. Retrieved from http://myfirstdrone.com/tutorials/buying-guides/best-drones-for- sale/#camera_drones_index
Unmanned aerial vehicle competition. [Photograph]. Retrieved from Encyclopædia Britannica ImageQuest.
http://quest.eb.com/search/132_1373346/1/132_1373346/cite