References
- Amoroso , E. C. 1952 . “ Placentation ” . In Marshall's Physiology of Reproduction , 3rd ed. Edited by: Parkes , A. S. Vol. II , 177 – 179 . In
- Bain , A. M. 1967 . The manual diagnosis of pregnancy in the thoroughbred mare . N.Z. vet. J. , 15 : 227 – 230 .
- Du Plessis , J. L. 1964 . Some observations and data in thoroughbred breeding . J. S. Afr. vet. med. Ass. , 35 : 215 – 221 .
- Jennings , W. E. 1950 . Twelve years of horse breeding in the army . J. Am. vet. med. Ass. , 116 : 11 – 16 .
- Matassino , D. 1962 . A study of the vital statics of Hafling mares in Southern Italy. I. Services, conceptions, non-pregnancies, abortions, parturitions and average age at different parturitions . Ann. Fac. Sci. agr. Portici , 28 : 249 – 267 . Ser. 3 [Abstr. 1788 in Anim. Breeding Abs., 31 (1963)].
- Merkt , H. 1966 . Foal heat and embryonic resorption . Zuchthygiene , 1 : 102 – 108 . [Abstr. 1035 in Anim. Breeding Abs., 35 (1967)].
- van Niekerk , C. H. 1965 . II. Early embryonic resorption in mares . J. S. Afr. vet. med. Ass. , 36 : 61 – 69 .