@incollection{:/content/books/9789210592406c006, author = "United Nations Office of Legal Affairs", title = "Cumulative (1988) numerical index by registration or filing and recording numbers", booktitle = "Statement of Treaties and International Agreements", publisher = "United Nations", year = "1988", pages = "19-31", url = "https://www.un-ilibrary.org/content/books/9789210592406c006" }