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![](./img/clear.gif) 1.- Description of certain lower devonian platform conodonts of the Spanish Central Pyrenees
Boersma, Kerst Th.
F - A / 475|
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![](./img/clear.gif) 2.- Description of certain Lower Devonian platform conodonts of the Spanish Central Pyrenees
Boersma, Kerst Th.
1973
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![](./img/clear.gif) 3.- Devonian and Lower Carboniferous conodont biostratigraphy, Spanish Central Pyrenees
Boersma, Kerst Th.
1973
Revistas
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![](./img/clear.gif) 4.- Devonian and lower carboniferous conodonts biostratigraphy,Central spanish Pyrenees
Boersma, Kerst Th.
F - A / 474|
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![](./img/clear.gif) 5.- On the basal structure of siphonodella cooperi hass, 1959 and siphonodella lobata (branson & Mehe), 1934
Boersma, Kerst Th.
1973
F - A / 476
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