On September 16, 1939 representatives of the Youth Leagues of Japan, Manchukuo and China gathered for the 15th Congress in Seoul.
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大日本青年團第十五回大會 - Great Japan Youth League Congress [Convention]
日満支青年交驩會 - Japan-Manchuria-China Youth Exchange of Courtesies [Fraternization] Gathering...
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大日本青年团第十五回大会日満支青年交驩会章
大日本青年团第十五回大会章
大日本青年團第十五回大會日満支青年交驩會章
大日本青年團第十五回大會章
日満支青年交驩会章