1. Estrogens and progestagins;Astwood,1970
2. Circulating levels of luteinizing hormone (LH), chorionic gonadotropin (CG), estrogen (E), and progesterone (P) during pregnancy in the rhesus monkey;Atkinson;Biol. Reprod.,1971
3. Progravid phase of the rat reproductive cycle: Day to day changes in peripheral progestin concentrations;Bartosik;Endocrinology,1973
4. The role of oestrogens and progesterone in the onset of parturition in various species;Bedford;J. Reprod. Fert.,1972
5. An investigation into the etiology of nausea and vomiting of pregnancy;Berstein;Minn. Med.,1952