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“Influence of Solar Activity on State of Wheat Market in Medieval England ” https://t.co/s4YAnvePLz
“Influence of Solar Activity on State of Wheat Market in Medieval England ” https://t.co/s4YAnvePLz
[astro-ph/0312244] Influence of Solar Activity on State of Wheat Market in Medieval England https://t.co/mFw8afmQA2