00587nam a22002053 44500 37692 978-0-521-13872-7 37692 20130926 frey50 eng USA Customary International Law [Text] A new theory with practical aplications New York Cambridge University Press 2010 419 p. Ser. "ASIL Studies in International Legal Theory" Index: p.397-419 Drept internaţional 341(075.8)=111 Lepard Brian D. BK