TY - BOOK AU - Casanovas y La Rosa,Oriol TI - Unity and pluralism in public international law T2 - Developments in international law SN - 9041116648 (hc. : alk. paper) U1 - 341 21 PY - 2001/// CY - The Hague, New York PB - M. Nijhoff Publishers KW - International law KW - Methodology KW - Social aspects KW - Customary law, International KW - Derecho internacional KW - Metodología KW - Aspectos sociales KW - Derecho Consuetudinario N1 - Includes bibliographical references (p. [251]-255) and index ER -