1. Retention of��� ova by the Fallopian tube in mares;Betteridge;J. Reprod. Fert.,1972
2. Direct evidence of retention of unfertilized ova in the oviduct of the mare;Betieridge;J. Reprod. Fen.,1974
3. A surgical technique applied to the study of tubal eggs in the mare;Betteridge;J. Reprod. Fert.,1975
4. Embryo transport through the mare's oviduct depends on cleavage and is independent of the ipsilateral corpus luteum;Betieridge;J. Reprod. Fert.,1979
5. Demonstration of postovulatory sphincter action by the isthmus of the rabbit oviduct;Blair;Fert. Steril,1976