Technical Co-operation among Developing Countries Conference, Buenos Aires 1978
Now showing: Argentina - Postage stamps - 1978 - Technical Co-operation among Developing Countries Conference, Buenos Aires - 1 stamps.
1978
Technical Co-operation among Developing Countries Conference, Buenos Aires
2. September WM: None Design: H. Viola. Engraving: Casa de moneda. Perforation: 13½
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