The 8th World Computer Congress and Third World Conference on Medical Informatics, Tokyo 1980
Rāda: Japāna - Pastmarkas - 1980 - The 8th World Computer Congress and Third World Conference on Medical Informatics, Tokyo - 1 marka.
1980
The 8th World Computer Congress and Third World Conference on Medical Informatics, Tokyo
29. septembris SV: Neviens Perforēšana: 13¼
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