Water resources and buffalo and cattle rearing in Sri Lanka - a historical perspective

agentes nocivos agricultura agriculture animal animal breeding animal de travail animal diseases animal domestique animal laitier animal pour cuirs et peaux animal production animales animales de carne animales de trabajo animales lecheros animals artiodactyla artiodactyle asia asie bovidae bovide bovin bovine bovines breeding buffle d'eau cattle diseases domestic animals energia energie energy energy sources enfermedades de los animales facteur nuisible ganado ganado bovino injurious factors livestock maladie des animaux mammals meat animals mejoramiento animal natural resources production production animale recursos recursos naturales resources ressource ressource en eau ressource naturelle rumiante ruminant ruminants vertebrados vertebrates vertebre water buffaloes water resources working animals