Buga Irina Au. Modification of treaties by subsequent practice - Oxford Oxford Univeristy Press UK 2018 - lvi,417p. cm. ISBN: 9780198787822 (hbk) UKP 80.00 Standard No.: 41131 Source: 56921, 14/01/2019, Segment Book Distributors Textual Subjects--Topical Terms: INTERNATIONAL LAW Dewey Class. No.: Z1, Q8