?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Gohr%2C+Albrecht&rft.aulast=Gohr&rft.aufirst=Albrecht&rft.date=1933&rft.btitle=Enqu%C3%AAte+ethnographique+relative+aux+diverses+formes+d'asservissement+au+Congo&rft.genre=book