The 30th Anniversary of the Institute of Mining and Geology, Sofia 1983
Menampilkan: Bulgaria - Prangko - 1983 - The 30th Anniversary of the Institute of Mining and Geology, Sofia - 1 prangko.
1983
The 30th Anniversary of the Institute of Mining and Geology, Sofia
10. Agustus WM: Tiada Perforasi: 13
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