Thulin, B. (1987). Diatoms and paleoenvironment at Ottenby, southern Öland, southeastern Sweden. Societas Upsaliensis pro Geologia Quaternaria.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रThulin, Barbara. Diatoms and Paleoenvironment at Ottenby, Southern Öland, Southeastern Sweden. Uppsala: Societas Upsaliensis pro Geologia Quaternaria, 1987.
एमएलए (8वां संस्करण) प्रशस्ति पत्रThulin, Barbara. Diatoms and Paleoenvironment at Ottenby, Southern Öland, Southeastern Sweden. Societas Upsaliensis pro Geologia Quaternaria, 1987.
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