The 1st Asian-Pacific Allergy and Immunology Congress, Bangkok 1992
Viser nu Thailand - Post frimærker - 1992 - The 1st Asian-Pacific Allergy and Immunology Congress, Bangkok - 1 frimærker.
1992
The 1st Asian-Pacific Allergy and Immunology Congress, Bangkok
22. november VM: 6 Gravering: Joh. Enschedé. Perforeringer: 13½
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