"History_of_logic#Ancient_Greece_before_Aristotle" . "logic" . . . . . "medieval and early modern logic" . "development of logic" . "Modern Logic" . . "History of logic" . . "algebraic logical methods" . "History of logic#Logic in ancient Greece" . . . "historian of logic" . "history of logic" . . . . . "History of logic#Logic in the West" . "History of logic" . . . . . . "History and Philosophy of Logic" . . "History of logic#Rise of modern logic" . "noted logician" . "development of modern logic" . . .