Migration, urbanization, resources, and development /
Wedi'i Gadw mewn:
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Laxenburg, Austria :
International Institute for Applied Systems Analysis,
1977.
|
| Pynciau: |
| Disgrifiad Corfforoll: | ix, 73 p. ; 24 cm. |
|---|