William R. Leonard is Associate Professor of Anthropology at Northwestern University, Illinois. He is a biological anthropologist whose research focusses heavily on aspects of physiology, nutrition and health. He has extensive fieldwork experience in Siberia and Latin America examining how human populations adapt to extreme environments. Michael H. Crawford is Professor of Anthropology at the University of Kansas. His research focuses on anthropological genetics particularly in populations in the Americas. He has also written The Origins of Native Americans (1998), and edited Different Seasons: Biological Aging in Mennonites of Midwestern United States (2000).

• 1. The biological diversity of herding populations: an introduction Michael H. Crawford and William R. Leonard; 2. Genetic structure of pastoral populations of Siberia: the Evenki of Central Siberia and the Kizhi of Gorno Altai Michael H. Crawford, Joseph McComb, Moses S. Schanfield and R. John Mitchell; 3. Genetic structure of the Basque herders of northern Spain Rosarió Calderón; 4. History, demography, marital patterns and immigration rate in the South Sinai Bedouins: their effect of the coefficient of inbreeding (F) E. Kobyliansky and I. Hershkovitz; 5. Uncertain disaster: environmental instability, colonial policy, and the resilience of East African pastoral systems Sandra Gray, Paul Leslie and Helen Alinga Akol; 6. Changing pattern of Tibetan nomadic pastoralism Melvyn C. Goldstein and Cynthia M. Beall; 7. Human biology, health and ecology of nomadic Turkana pastoralists Michael A. Little; 8. Economic stratification and health among the Herero of Botswana Renee L. Pennington; 9. Ecology, health and lifestyle change among the Evenki herders of Siberia William R. Leonard, Victoria A. Galloway, Evgueni Ivakine, Ludmila Osipova and Marina Kazakovtseva; 10. Disease patterns in Sámi and Finnish populations: an update Simo Näyhä, Pauli Luoma, Saara Lehtinen, Terho Lehtimäki, Mary Jane Mosher and Juhani Leppäluoto; 11. Yomut family organization and demography William Irons; 12. Pastoralism and the evolution of lactase persistence Clare Holden and Ruth Mace.

Review of the hardback: '… this volume of high quality papers will be of most interest and reward to the specialists in nomadic pastoral societies who already have a lot of factual knowledge about these societies.' The Agricultural History Review