yóupiào yánjiù
See also:
yóupiào yánjiū
Mandarin
Romanization
yóupiào
yánjiù
(
Zhuyin
ㄧㄡˊ ㄆㄧㄠˋ ㄧㄢˊ ㄐㄧㄡˋ
)
Pinyin
transcription of
郵票研究
,
邮票研究
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