TY  - BOOK
AU  - Mark Villiger
TI  - Customary international law and treaties : a manual on the theory and practice of the interrelation of sources
SN  - 9041104585
AV  - KZ 1277 VIL 1997
PY  - 1997///
CY  - Netherlands
PB  - Kluwer Law International
ER  -