1. Organization systems and dominance in feral horses in the Grand Canyon;Berger;Behav Sociobiol,1977
2. Wild Horses of the Great Basin;Berger,1986
3. Elephant seals: genetic variation and near extinction;Bonnell;Sci,1974
4. The role of inbreeding in the development of the Clydesdale breed of horses;Calder,1927
5. Evolution in Age-Structured Populations;Charlesworth,1980