CPV code 22114100 designates Dictionaries in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
22114100 is a leaf code — the most specific level of its branch — so it can be used directly as the main CPV code of a contract notice. If it does not quite fit, check the neighbouring codes under 22114000 (Dictionaries, maps, music books and other books).