Some of the most visible UN operations are not conducted directly by the Principal Organs, but rather by subsidiary bodies. These take the shape of boards, commissions, committees, councils and panels, working groups and others.
Other U.N. Documents
These U.N. Subsidiary Bodies produce their own documentation:
Besides the “usual suspects” (i.e. ODS, UN Digital Library), you can often find specialized agency documents on that agency’s website.
In addition, a specialized agency that serves as a depositary for any treaty or convention will generally maintain detailed information at its website regarding each such treaty or convention.
Example: United Nations Office for Outer Space Affairs
http://www.unoosa.org/oosa/index.html