@book{justhis2804,
           title = {L'enseignement communal},
          author = {Robert Wilkin},
         address = {Li{\`e}ge},
       publisher = {Imprimerie des invalides},
            year = {1939},
        keywords = {enseignement Onderwijs Education},
             url = {http://www.just-his.be/eprints/2804/}
}