The 30th Anniversary of the Institute of Mining and Geology, Sofia 1983
Τώρα εμφανίζεται Βουλγαρία - Γραμματόσημα - 1983 - The 30th Anniversary of the Institute of Mining and Geology, Sofia - 1 Γραμματόσημα.
1983
The 30th Anniversary of the Institute of Mining and Geology, Sofia
10. Αύγουστος WM: Κανένα Διάτρηση: 13
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