1. Equine response to the trophoblast in xenogenic equine pregnancy;Allen,1987
2. Equine endometrial cups: maternal uterine responses following extraspecific embryo transfer between horses and donkeys;Allen;J Anat,1986
3. Priorities and direction of nutritional research in zoos;Allen,1988
4. Preliminary observations on reproduction in a female sheep-goat chimaera;Anderson;Vet Rec,1991
5. Effects of population density on behavior in rodents;Archer,1970