Ritter, Wolfgang

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Journal Article

Schäfer, Marco; Pettis, Jeff S.; Ritter, Wolfgang; Neumann, Peter (2010). Simple Small Hive Beetle Diagnosis. American bee journal, 150(4), pp. 371-372. Hamilton, Ill.: Dadant

Schäfer, Marc Oliver; Ritter, Wolfgang; Pettis, Jeff S.; Neumann, Peter (2010). Winter Losses of Honeybee Colonies (Hymenoptera: Apidae): The Role of Infestations With Aethina tumida (Coleoptera: Nitidulidae) and Varroa destructor (Parasitiformes: Varroidae). Journal of economic entomology, 103(1), pp. 10-16. College Park, Md.: Entomological Society of America 10.1603/ec09233

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