@book{justhis5827,
           title = {Op{\'e}rations commerciales. Usages, documents et renseignements commerciaux (Biblioth{\`e}que pratique des sciences commerciales)},
          author = {L. Daubresse},
         address = {Mons},
       publisher = {Par l'auteur},
            year = {1903},
             url = {http://www.just-his.be/eprints/5827/}
}