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Sefer Mekor Hayyim. en Title page of Jacob Ben Jacob Moses of Lissa Sefer Mekor Hayim Vehu Hidushim uve'Urim 'al Hilkhot Pesah Zolkiew Saul Meyerhoffer Sefer Mekor Hayyim Source of Life commentary on Shulhan 'Aruk Orah Hayyim and following with notes on the commentaries Ure Zahab and Magen Abraham the second part contains hiddushim