Notas del episodio
How Serbia Weaponized Mud at Kolubara
Palabras clave
SerbianDecemberNovemberWorld WarAustroBelgradeAustriaBalkanSerbsBattle of SurPutnikEmperor Franz JosephKulubaraStepanovichPodiorekGreat WarHungary and the Kingdom of SerbiaHungary and SerbiaBattle of KolubaraArchduke Franz Ferdinand