23rd International Geological Congress issue of Czechoslovakia
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Short desc: 23rd International Geological Congress
Issuer: Czechoslovakia Date: 8/8/1968 Occasion: International Geological Congress / 23rd International Geological Congress Consists of 5 stamps: (See stamps as list) 30h d=Amonit Hypophylloceras Bizonatum Fritsch 60h d=Miocenní žába Paleobatrachus grandipes Giebel 80h d=Řez Geodou Achátu 1k d=Tatra Landscape and Chlamys gigas Shell 1.60k d=Trilobit Selenopeltis buchi buchi Barr All are perf=11.5 Record of changes |
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