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Sayyed Hasan Taqizādeh (1878 – 1970)was an influential Iranian politician and diplomat, of Azeri origin, during the Qajar dynasty under the reign of Mohammad Ali Shah, as well as the Pahlavi dynasty under the reign of Reza Shah and Mohammad Reza Shah. Taqizadeh was also a prominent scholar; his studies on Iranian calendars remain reference work up until now.
