U.n. · United N. · United Nation Environment Programme
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Annual Bulletin of General Energy Statistics for Europe/Bulletin Annuel De Statistiques Generales De L'Energie Pour L'Europe, 1990/Sales No E/F/R.92. | 978-92-1-016273-9 (92-1-016273-0) | 1993 |
| Navigation on the High Seas: Legislative History of Part VII Section I | 978-92-1-133243-8 (92-1-133243-5) | 1983 |