Airmail - The 10th Inter-American Cancer Congress, San Jose 1970
Now showing: Costa Rica - Postage stamps - 1970 - Airmail - The 10th Inter-American Cancer Congress, San Jose - 4 stamps.
Now showing: Costa Rica - Postage stamps - 1970 - Airmail - The 10th Inter-American Cancer Congress, San Jose - 4 stamps.
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