Yehuda Leib Katsnelson, (Russian: Лев (Иегуда Лейб Вениамин) Израилевич Каценельсон; 29 November 1846, (Hebrew Calendar 10 Kislev 5690), Chernigov – 1917, Petrograd), also known by his pen name 'Buki Ben Yogli',[1] was a military doctor, writer and publicist of Hebrew Literature.
He was eager to promote Jewish-owned agricultural advances wherever possible, especially in southern Russia and the Jewish colonies in Argentina.
After the resignation of Simon Dubnov, Katznelson was appointed to the main Iibrskyh encyclopedia[clarification needed].
He was the author of a work on talmudic medicine; among other topics it analyzed the parallels between vitiligo and biblical Tzaraath.
Monographs on his life and works include those by David Frishman, Jacob Fichman, Ben-Zion Katz, Menachem Ribolob and Reuben Brainin, Messed Lachover and Israel Cohen.