The 100th Anniversary of the Discovery of Lactobacillus Bulgaricus 2005
Ora in esposizione: Bulgaria - Francobolli postali - 2005 - The 100th Anniversary of the Discovery of Lactobacillus Bulgaricus - 1 francobolli.
2005
The 100th Anniversary of the Discovery of Lactobacillus Bulgaricus
31. Ottobre WM: Nessuno Dentellatura: Imperforated
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