Liczbińska, G. et al. 2026. "Searching for a Needle in a Haystack". The Intricacies of Sources on Causes of Death, Their Interpretation, and the Construction of a Database for the City of Poznań, 1830–1900. Historical Life Course Studies. 16, (May 2026), 146–160. DOI:https://doi.org/10.52024/hlcs25008.