 In addition to expertise and special interest in regional development, irrigated and rainfed agriculture, pioneer settlement, community-based natural resource management, and impacts of large-scale river basin development projects on low income populations, Scudder has focused on systematic long-term studies of low income human communities.The most classic of his long-term studies has been carried out with anthropologist Elizabeth Colson among the Gwembe Tonga of Zambia.Author Jacques Leslie devotes a third of his narrative nonfiction book "Deep Water