first manual on a double-entry bookkeeping system
... that the first manual on a double-entry bookkeeping system was written by Benedikt Kotruljević in 1458, more than 36 years earlier than previously thought?
... that the <b id="mwEkU"><a href="./Della_mercatura_e_del_mercante_perfetto" id="mwEkY" rel="mw:WikiLink" title="Della mercatura e del mercante perfetto">first manual on a double-entry bookkeeping system</a></b> was written by <a class="mw-redirect" href="./Benedikt_Kotruljević" id="mwEkc" rel="mw:WikiLink" title="Benedikt Kotruljević">Benedikt Kotruljević</a> in 1458, more than 36 years earlier than previously thought?