Hans van Dijk Archive 戴漢志檔案
Correspondences 書信
Letter from Ni Haifeng to Hans van Dijk, 7 July 1989
Hans van Dijk Archive 戴漢志檔案.Correspondences 書信 1 Document
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Letter from Ni Haifeng to Hans van Dijk, 10 September 1991
Hans van Dijk Archive 戴漢志檔案.Correspondences 書信 1 Document
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Letter from Ni Haifeng to Hans van Dijk, 1 December 1991
Hans van Dijk Archive 戴漢志檔案.Correspondences 書信 1 Document
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Letter from Wolfger Pohlmann to Ni Haifeng, 14 August 1992
Hans van Dijk Archive 戴漢志檔案.Correspondences 書信 1 Document
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Letter from Ni Haifeng to Hans van Dijk, 28 September 1992
Hans van Dijk Archive 戴漢志檔案.Correspondences 書信 1 Document
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Letter from Hans van Dijk to Ni Haifeng, 9 September 1992
Hans van Dijk Archive 戴漢志檔案.Correspondences 書信 1 Document
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