Bessoff, Heather. 1990. “Risk of Iatrogenic Abortion by Rectal Palpation in the Cow: A Review, Correlation of Pregnancy Diagnosis Methods and Embryonic Mortality in the Dairy Cow”. The Bovine Practitioner, no. 25 (September):124-26. https://doi.org/10.21423/bovine-vol0no25p124-126.