1. Studies on calving difficulties and calf performance in exotic and straightbred cattle;Glimp,1971
2. Factors affecting net calf crop in beef cattle;Wiltbank;J. Anim. Sci.,1961
3. Relationship of calving difficulty in beef cattle to subsequent performance of cow and calf;Bovard,1972
4. Calving difficulty and its association with subsequent productivity in Herefords;Brinks;J. Anim. Sci.,1973
5. Some causes of neonatal and postnatal calf losses;Anderson;J. Anim. Sci.,1967