Panarithmologia [microform] : being a mirror, breviate, treasure, mate, for merchants, bankers, tradesmen, mechanicks, and a sure guide for purchasers, sellers, or mortgagers of land, leases, annuities, rents, pensions, &c. in present possession or reversion : and a constant concomitant fitted for all mens occasions : in three parts : all performed by tables ready cast up ... : all which tables are made easie by variety of examples / calculated and published by W. Leybourn ; to which is added a necessary appendix containing heads of daily use to all traders