@misc{friedrich2007twop, author={Michael {Friedrich}}, title={{Tree-ring width of Picea abies (Karsten) from historical object sample HOH4679-1}}, year={2007}, doi={10.1594/PANGAEA.577977}, url={https://doi.org/10.1594/PANGAEA.577977}, organization={Institute of Botany, University of Hohenheim}, type={data set}, publisher={PANGAEA} }