Hessland, I. (1949). Investigations of the Lower Ordovician of the Siljan District, Sweden. I. Lower Ordovician ostracods of the Siljan District, Sweden. Bulletin of the Geological Institutions of the University of Uppsala. 33(3):97-408.
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Hessland, I.
1949
Investigations of the Lower Ordovician of the Siljan District, Sweden. I. Lower Ordovician ostracods of the Siljan District, Sweden
Bulletin of the Geological Institutions of the University of Uppsala