विषय - सूची “...Introduction -- Anatomy and physiology -- The origins of hippos -- The social life of hippos -- Reproduction in hippos -- Diet and feeding habits of hippos -- The ecology of hippos -- Diseases, parasites and commensals of hippos -- Hippos and man -- The distribution and numbers of hippos -- The distribution and numbers of Hippopotamus amphibius in East Africa -- The distribution and numbers of Hippopotamus amphibius in Southern Africa....”