An essay on book-keeping, according to the true Italian method of debtor and creditor, by double entry. [electronic resource] : Wherein the theory of that excellent art is clearly laid down in a few plain rules; and the practice made evident and easy, by variety of intelligible examples. The whole in a method new and concise. [B]y William Webster, writing-master, in Orange-Street, near Leicester-Fields: author of arithmetick in epitome.