Strengths and challenges of acosystem approaches to human health: Lessons learnt from health impacts of small dams case studies in Ethiopia, Burkina Faso and Morocco - Laamrani, Hammou; Boelee, Eline; Ait Lhaj, A.; Rhajaoui, H.; Yohannes, M.; Zongo, D. (International Development Research Centre, 2006)