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魏齋璽印存稿, ART-YIN-SYX-0556. 古籍. http://10.55.102.87:8081/repositories/4/resources/1812 Accessed May 20, 2025.

(易孺 (鶴山人) and 易孺 (鶴山人)

(易孺 (鶴山人) & 易孺 (鶴山人), n.d.)

(易孺 (鶴山人) and 易孺 (鶴山人), n.d.)

易孺 (鶴山人) and 易孺 (鶴山人), “魏齋璽印存稿, ART-YIN-SYX-0556,” ., accessed May 20, 2025, http://10.55.102.87:8081/repositories/4/resources/1812.

易孺 (鶴山人), 易孺 (鶴山人). 魏齋璽印存稿, ART-YIN-SYX-0556[Z/OL]([no date])[2025–05–20]. http://10.55.102.87:8081/repositories/4/resources/1812.