Conversion for wood: 1 solid cubic meter spruce = 700 kg naturally damp wood (source: from "Technologie des Holzes und der Holzwerkstoffe (“Wood and Timber Products Technology”), 2nd edition, Franz Kollmann, Springer-Verlag), 1982, 80 % fibre content in the paper

Data source for total energy, CO₂ (#) and water: IFEU Institut, "Ökologischer Vergleich von Büropapieren in Abhängigkeit vom Faserrohstoff, 2006" (“Ecological Comparison between Office Papers and their Dependence on Fibre Resources"

CO₂ emission: calculated from IFEU study 2006 (see above).

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