Number Ü-83-10
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Kirje | Pealkiri | Lk | Lisainfo | |
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Heinsalu, H. et al., 1987 | The section of the Cambrian-Ordovician boundary beds in Ülgase, northern Estonia | |||
Puura, I., 1996 | Lingulate brachiopods and biostratigraphy of the Cambrian-Ordovician boundary beds in Baltoscandia |
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Sirvi e-Maapõues