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Prev:
Chalcopsitta sintillata
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chalcopyrite
(1974)
chalcopyrite (1971)
Short desc: chalcopyrite (1971)
Things in this design:
mineral
chalcopyrite
This design is used by one stamp:
Portugal 9/24/1971 6.50e issue=Economic Geology Congress dt=minerals (1971 Portugal) perf=12
Record of changes
