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  1. Nanjing Astronomical Observatory

    • Collection: Paul Pickowicz Collection
    • Name: Pickowicz, Paul; Zhongguo ke xue yuan. Zijin shan tian wen tai
    • Date: 1971-07-04
    • Topic: Armillary spheres; Astronomical instruments
    • Format: image
  2. Nanjing Astronomical Observatory

    • Collection: Paul Pickowicz Collection
    • Name: Pickowicz, Paul; Zhongguo ke xue yuan. Zijin shan tian wen tai
    • Date: 1971-07-04
    • Topic: Armillary spheres; Astronomical instruments
    • Format: image
  3. Nanjing Astronomical Observatory

    • Collection: Paul Pickowicz Collection
    • Name: Pickowicz, Paul; Zhongguo ke xue yuan. Zijin shan tian wen tai
    • Date: 1971-07-04
    • Topic: Armillary spheres; Astronomical instruments
    • Format: image
  4. Nanjing Astronomical Observatory

    • Collection: Paul Pickowicz Collection
    • Name: Pickowicz, Paul; Zhongguo ke xue yuan. Zijin shan tian wen tai
    • Date: 1971-07-04
    • Topic: Armillary spheres; Astronomical instruments
    • Format: image