linguistic:translation
As a historical source

Following Judah the Prince's redaction there remained a number of different versions of the Mishnah in circulation. The Mishnah used in the Babylonian rabbinic community differing markedly from that used in the Palestinian one. Indeed within these rabbinic communities themselves there are indications of different versions being used for study. These differences are shown in divergent citations of individual Mishnah passages in the Talmud Yerushalmi and the Talmud Bavli, and in variances of medieval manuscripts and early editions of the Mishnah. The best known examples of these differences is found in J.N.Epstein's Introduction to the Text of the Mishnah (1948).