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56 Šn/32-sep.
AHLBERG, Per
Ocular structures in an Ordovician agnostid trilobite / Per Ahlberg. -- S.115-120 : 3 Figs. -- In: Lethaia. -- 1988, Vol.21. -- separát. -- bibl.. -- Citováno jako: AHLBERG, Per Ocula structures in an Ordovician... Lethaia. 1988, Vol.21, S.115-120: 3 Figs.
Oculagnostus n. gen.
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