?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.date=1998&rft.btitle=Annuaire+de+la+l%C3%A9gislation+du+travail%2C+publi%C3%A9+par+l'Office+du+travail+de+Belgique.+1897-+%5B1919%5D+(Minist%C3%A8re+de+l'Industrie+et+du+Travail)&rft.genre=book