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Igeret Rav Sherira gaʼon, mesuderet bi-shene nusḥaʼot Nusaḥ Sefarad ṿe-Nusaḥ Tsarfat ʻim ḥilufe girsaʼot mi-khol kitve-ha-yad ṿe- ḳiṭʻe ha-"Genizah" sheba-ʻolam; ṿe-ʻim heʻarot shonot ʻal-yede Binyamin Menasheh Leṿin.Benjamin Manasseh Lewin1921HE