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6th Brazilian Mathematical Congress issue of Brazil

  • Colnect-964-396-6-ordm--Matematic-Po-ccedil-os-de-Caldas.jpg
Short desc: 6th Brazilian Mathematical Congress

Issuer: Brazil
Date: 7/21/1967
Occasion: 6th Brazilian Mathematical Congress


Consists of 1 stamp: (See stamps as list)

5c bl&blk d=Moebius strip

All are wmk=CORREIO*BRASIL*(5mm) perf=11.5x11