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| 920 • Chroniclers in Baghdad record an unusually cold summer.Domínguez-Castro, Fernando; Vaquero, José Manuel; Marín, Manuela; Gallego, María Cruz; García-Herrera, Ricardo. "How useful could Arabic documentary sources be for reconstructing past climate?" Weather 67(3): 76-82 DOI: 10.1002/wea.835 march 2012 |