G. E. Hollis

• Water management and wetlands in sub-Saharan Africa
• Water management and wetlands in sub-Saharan Africa
• Les programmes de conservation de la nature et de gestion des eaux de parc national de l'Ichkeul
• Man's impact on the hydrological cycle in the United Kingdom
• The estimation of the hydrologic impact of urbanisation
• The Hadejia-Nguru wetlands