http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
list of terms used in indexing and cataloguing of documents and other materials relevant to United Nations programmes and activities
Dag Hammarskjold Library, United Nations bibliographic information system (UNBIS).
"United Nations publication sales number E.81.I.17"--Title page verso.
Bibliographical series (Dag Hammarskjöld Library) ; no. 37