The 100th Anniversary of the Geneva Conference on Organic Nomenclature 1992
Ora in esposizione: Svizzera - Francobolli postali - 1992 - The 100th Anniversary of the Geneva Conference on Organic Nomenclature - 1 francobolli.
1992
The 100th Anniversary of the Geneva Conference on Organic Nomenclature
24. Marzo WM: Nessuno Disegno: Burkard Waltenspül. Incisione: Courvoisier. S.A. Dentellatura: 11¾
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