For citations:

Ryabova V.I. The Ex-Libris of Pastor Gottlieb Beratz: From the History of Book Heritage of the Germans in the Volga Region. Bibliotekovedenie [Russian Journal of Library Science]. 2018;67(3):322-329. (In Russ.) https://doi.org/10.25281/0869-608X-2018-67-3-322-329