International Congress for Parasitologists 1978
Praegu kuvatakse: Poola - postmargid - 1978 - International Congress for Parasitologists - 2 margid.
1978
International Congress for Parasitologists
19. august WM: mitte ükski lehe suurus: 30 Disain: T. Konarski perforatsioon: 11:11½
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