The 15th Anniversary of the Australian Mathematics Competition 1993
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1993
The 15th Anniversary of the Australian Mathematics Competition
1. heinäkuu VM: Ei mitään Perforaatio: 13½
![[The 15th Anniversary of the Australian Mathematics Competition, tyyppi WS]](https://www.stampworld.com/media/catalogue/French-Polynesia/Postage-stamps/WS-s.jpg)
