Sanger, J.E.Gorham, E.2012-06-192012-06-191973Sanger,J.E., Gorham,E. A comparison of the abundance and diversity of fossil pigments in wetland and woodland humus layers. Ecology 1973; 54(3):605-611.https://hdl.handle.net/11299/125846Copyright by the Ecological Society of AmericaFossil pigments in lake sediments as indicators of productivity, evolution, eutrophication and sources of organic matterWoodland ecologyArticle