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A darkening of Swedish lakes due to increased humus inputs during the last 15 years
Forsberg, Curt, Petersen, Robert C.Volume:
24
Language:
english
Journal:
SIL Proceedings, 1922-2010
DOI:
10.1080/03680770.1989.11898741
Date:
December, 1990
File:
PDF, 520 KB
english, 1990