There are 2 matches

Collection Authorizer Collection name Reference
80715W. Kiessling Porkuni quarry, bioherm (= Reef 2963. Called "Borkholm" in German literature. ) Porkuni - Ordovician 5 - Estonia Hints et al. (2000)
174122B. Kröger Porkuni Porkuni - Ordovician 5 - Estonia Kaljo (1958)

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