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R. Chaim Ilson has a lengthy series of shiurim on this, with several hours per shoresh. These shiurim are available on YUTorah. From the linked website: Rav Ilson studied the Shoroshim with Rabbi Joseph B. Soloveitchik zt”l and has been delivering shiurim on the Shoroshim for more than two decades. These shiurim are the basis of the project, a Sefer ...


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