A new introduction to book keeping, after the Italian method, by debtor and creditor : in which the theory of that art is not only elucidated, but the practice made easy and familiar, by the addition of a set of books, exhibiting the various incidents which ususally fall in a course of business. The whole laid down in a manner so easy and intelligible as to be understood in a few days. : To which is added, several forms of bills, &c. /