Ma'aseh Toviyyah or Ma'aseh Tobiyyah ("Work of Tobias") was an encyclopedic scientific reference book written by Tobias Cohn.
He practised for some time in Poland, and removed later to Adrianople, where he became physician to five successive Ottoman sultans— Mehmed IV, Suleiman II, Ahmed II, Mustafa II, and Ahmed III, moving with the court to Constantinople.
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His father was the Polish physician Moses Kohn of Narol, in the district of Bielsk, who moved to Metz in 1648 to escape persecution during the Chmielnicki Uprising.
Tobias Smollett | Marc Cohn | Tobias Wolff | Tobias Preis | Marjorie Cohn | Richard Cohn | Harry Cohn | Daniel Cohn-Bendit | Todd Tobias | Tobias | Norman Cohn | Tobias Sammet | Roy Cohn | Nudie Cohn | Gretta Cohn | Erich Cohn | Tobias Sippel | Tobias Moretti | Tobias Kurbjuweit | Tobias Barreto, Sergipe | Tobias Barreto | Stephen Cohn | Rudolf Tobias | Paul Cohn | Ola Cohn | Michael Tobias | John Tobias | James Cohn | Andrew Tobias | Zanvil A. Cohn |