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Part of: Schultze N, Laufer H, Kindler C, Fritz U (2019) Distribution and hybridisation of barred and common grass snakes (Natrix helvetica, N. natrix) in Baden-Württemberg, South-western Germany. Herpetozoa 32: 229-236. https://doi.org/10.3897/herpetozoa.32.e38897 |