yóupiào yánjiù

See also: yóupiào yánjiū

Mandarin edit

Romanization edit

yóupiào yánjiù (Zhuyin ㄧㄡˊ ㄆㄧㄠˋ ㄧㄢˊ ㄐㄧㄡˋ)

Hanyu Pinyin reading of 郵票研究／邮票研究

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