The pollen sum. - Paris.

von Wright, H.E
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Two pollen diagrams from Southeastern Minnesota : problems in the regional lateglacial and postglacial vegetational history. - Boulder, CO.

von Wright, H.E
Veröffentlicht in Bulletin of the Geological Society of America ; 74.1963, S. 1371-1396 : 7 Ill. ; 4 Tab.
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