HAGENBECK, C. & WÜNNEMANN, K. (1992)
Breeding the giant otter Pteronura brasiliensis at Carl Hagenbecks Tierpark.
Int. Zoo Yrbk. 31:240-245.
Bezugsquelle: https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1748-1090.1991.tb02392.x
hagenbeck-biblio
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