Subject
- Androgens1
- Cattle -- Artificial insemination1
- Cattle -- Fertility1
- Corticosterone -- Physiological effect1
- Endangered species1
- Estrogen1
- Melatonin -- Physiological effect1
- Prostaglandins1
- Rainbow trout1
- Rana -- Dispersal1
- Rana -- Geographical distribution1
- Rana -- Habitat1
- Red-sided garter snake -- Reproduction1
- Red-sided garter snake -- Reproduction -- Effect of temperature on1
- Semen1
- Voles1