@article{22009,
      note = {Appendices : 1. World Intellectual Property Organization  (WIPO) country codes; 2. International agreed numbers for  the identification of data (INID); 3. Patent kind of  document codes; 4. Countries covered in Derwent services;  5. Derwent coverage of Japanese patents by International  Patent Classification (IPC); 6.The Derwent classification  for all technologies;.},
      url = {http://tind.wipo.int/record/22009},
      title = {Global patent sources : an overview of international  patents.},
      recid = {22009},
      pages = {1 volume (various paging) ;},
}