The 18th Pan-American Union of Engineering Associations Convention 1984
Ora in esposizione: Venezuela - Francobolli postali - 1984 - The 18th Pan-American Union of Engineering Associations Convention - 1 francobolli.
1984
The 18th Pan-American Union of Engineering Associations Convention
28. Ottobre WM: Nessuno Disegno: Anisia Zavarse Gilly. Dentellatura: 11½
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