| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Catalogue of Studies in the Field of Transport | 978-92-1-104164-4 (92-1-104164-3) | 1985 |
| World Population Monitoring 1989: Special Report: The Population Situation in the Least Developed Countries/E 89 X111 L1 | 978-92-1-151186-4 (92-1-151186-0) | 1990 |
D.O. · n.d. · U. D. · U.n. · United N. · United Nations
United Nations. Department of International Economics and Social Affairs