title: Special forms of flight. I: Balloons, gliders, and hang gliders.
mesh_terms: D000060:Accidents, Aviation / Q000517:prevention & control; D000337:Aerospace Medicine / Q000266:history; D000401:Aircraft; D001359:Aviation / Q000266:history; D005602:France; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D012426:Russia; D013177:Sports; D006113:United Kingdom; D014481:United States