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Root respiration and its importance for the carbon balance of beech saplings ( Fagus sylvatica L.) in a montane beech forest[J] . Dirk Gansert.Plant and Soil . 1994 (1)
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Seasonal nitrogen and carbon concentrations in white, brown and woody fine roots of sugar maple ( Acer saccharum Marsh)[J] . Daniel Goldfarb,Ron Hendrick,Kurt Pregitzer.Plant and Soil . 1990 (1)
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