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Observations on dental variation in Microtus from the Cudahy Ash Pit Fauna, Meade County, Kansas and implications for Irvingtonian microtine rodent biochronology
Selbsttaetige Waage, bei der eine der Zufuhr des Materials dienende Klappe o. dgl. bei der Beendigung eines Wiegevorganges stufenweise geschlossen wird