Colliard, Claude-Albert Keywords: Boundary wateWater | Mots clefs: Cours d eau frontières | ABSTRACT Claude-Albert Colliard writes in the introduction to his course that international river law is obviously a part of entire public international law, but it presents the analysis of particular features. Two notions seem to characterize international river law: a notion of relativity or specificity, and a notion of finality. From these notions, the author examines the questions related to the use of rivers and b…