1. Physico-chemical defense of vertebrae organisms: The role of bile acids in defense against bacterial endotoxins;Bertok;Perspect. Biol. Med.,1974
2. Mother-young relationships and related behaviour among free-ranging Appaloosa horses;Blakeslee,1974
3. Time-budgets of Camargue horses. I. Developmental changes in the time-budgets of foals;Boy;Behaviour,1979
4. The natality, foal survivorship and mare-foal behavior of feral horses in Wyoming’s Red Desert;Boyd,1980
5. Factors which influence parturition in the mare and development of the foal;Campitelli;Appl. Anim. Ethol.,1982