bn:01225746n
Noun Concept
Categories: Hydrogen technologies, Philatelic terminology, Ballooning, French inventions, Airmail
EN
balloon mail  Balloon post
EN
Balloon mail is the transport of mail carrying the name of the sender by means of an unguided hydrogen or helium filled balloon. Wikipedia
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EN
Balloon mail is the transport of mail carrying the name of the sender by means of an unguided hydrogen or helium filled balloon. Wikipedia
Mail (usually for weight reasons in the form of a postcard) carrying the name of the sender by means of an unguided hydrogen- or helium-filled balloon. Wiktionary
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