?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Havard%2C+J.M.&rft.aulast=Havard&rft.aufirst=J.M.&rft.date=1851&rft.btitle=%C3%89l%C3%A9ments+du+droit+public+et+du+droit+administratif+en+Belgique%2C+d'apr%C3%A8s+le+programme+arr%C3%AAt%C3%A9+par+le+gouvernement&rft.genre=book