00401nam a2200121la 450000500170000000800370001705000220005410000210007624501150009725000170021226000420022930000080027120260128043429.0251202s9999    xx        000 0 und d  aKZ 1277bVIL 1997  aMark E. Villiger  aCustomary international law and treaties : a manual on the theory and practice of the interrelation of sources  a2nd rev. ed.  aHaguebKluwer Law Internationalc1997  a346