. . "Isaac M." . "Isaac Mario Katz Burstin" . "Isaac Katz"@en . . "יצחק" . "Katz"@en . "הרב יצחק כץ" . "Isaac Mario" . "of Prague Isaac Katz" . . . . "Isaac M. Katz" . "Katz, Isaac, of Prague" . "הרב יצחק" . . "Burstin" . "הרב יצחק כץ" . "1900" . "כץ" . . "Isaac Katz" . "הרב" . "Isaac M. Katz Burstin" . "Isaac Katz Burstin" . "Isaac M. Burstin" . "Katz Burstin" . . "Isaac"@en . "Isaac M. Katz"@fr-FR . "Katz"@fr-FR . . "M." .