1. Rules governing the Canadian record of performance for dairy cattle,1974
2. Variations in removal reasons and culling rates with age for dairy females;Allaire;J. Dairy Sci.,1977
3. Canadian dairy cow disposals II Effect of herd size and production level on dairy cow disposal patterns.;Batra;Canadian.J. Anim. Sci.,1971
4. Erb, H. N. 1976. An evaluation of a data-recording system, with a case-control study of 10 dairy cows diseases. M.Sc. thesis, University of Guelph, Ontario.
5. Erb, H. N. 1979. Interrelationships between production variables and reproductive diseases in Holstein cows. Ph.D. thesis, University of Guelph, Ontario.