Literaturrecherche

Literatur Wühlisch G von (2012) Poplars and willows in Germany: Report of the National Poplar Commission : time period: 2008-2011. Berlin: Federal Ministry of Food, Agriculture and Consumer Protection, 15, XI p

Literatur Polley H, Hennig P, Dunger K, Schwitzgebel F (2006) The Second National Forest Inventory - NFI 2 : Results ; Covering the National Forest Inventory Surveys of 2001 - 2002 and 1986 - 1988. Berlin: Federal Ministry of Food, Agriculture and Consumer Protection, 211 p