R-block staging entry validated for model fit. Imported from staging batch duell-thimm-r, source entry 1834. Berlin: Schroeder, 1847; later impressions and distinct Rothstein titles were separated. Individually bibliographically reviewed in phase 89 against the complete source entry and, where needed, independent catalogue evidence.
Quality phase 275: duplicate work-level record consolidated into this canonical work; distinct bibliographic manifestations and unresolved witness differences remain represented at edition level. Former work 3419 merged into work 1901.