1. Ewe and ram fertility in commercial flocks mated with differing numbers of ewes per ram;Allison;N.Z.J. Exp. Agric.,1975
2. Flock mating in sheep. IV. Effect of number of ewes per ram on ejaculated characteristics and libido during the mating period;Allison;N.Z.J. Agric. Res.,1978
3. Fertility of the ewe;Averill;Proc. Soc. Study Fert.,1955
4. Dietary factors affecting energy utilization;Blaxter;Proc. Nutr. Soc.,1964