These datasets (Administrative Units, Drainage, Agro-Climatic Zones,
Rainfall, Infrastructure) were scanned by the Canadian Land data
Systems Division, Land Directorate, Dept of Environment, ...
The Lake Chad Dataset which is a detailed case study of the
UNEP/FAO/ESRI Family was developed by UNEP/GRID, on behalf of the
UNEP/Fresh Water Unit for the Lake Chad Commission on Sustainable