Formal Logic Or, the Calculus of Inference, Necessary and Probable

Formal logic or, The Calculus of inference, necessary and probable This book, "Formal logic or, The Calculus of inference, necessary and probable", by Augustus de Morgan, is a replication of a book originally published before 1847. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible.