The fourth volume in the critical edition of Dzieła literackie (Literary works) by Stanisław Przybyszewski (1868–1927) comprises the novel trilogy Synowie ziemi (Sons of Earth), whose completion and printing process had taken over a decade, throughout the years 1900–1911. This has been mirrored in its internal heterogeneity and thematic evolution.
Project financed from the state budget, allocated by the Minister of Education and Science under the "National Programme for the Development of Humanities".