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Biological Activity and Amount of FDA Mycelium in Mor Humus of Scots Pine Stands (Pinus sylvestris L.) in Relation to Soil Properties and Degree of PollutionRauni Ohtonen and Anna Mari Markkola · Biogeochemistry · 1991
Scots pine responses to CO2 enrichment—I. Ectomycorrhizal fungi and soil faunaAnna Mari Markkola; Arvo Ohtonen; Ulla Ahonen-Jonnarth; Rauni Ohtonen · 1996