Karl, H.-V., Safi, A., & Paust, E. (2021). Re-examination and illustration of shells of interspecific hybrid tortoises of Testudo horsfieldii (Gray, 1844) and Testudo h. hermanni (Gmelin, 1789) (Testudines: Testudinidae) from the collection of Walter Kirsche in the Dahme-Heideseen nature park,. SPC Journal of Environmental Sciences, 3(2), 65-68. https://doi.org/10.14419/jes.v3i2.31722