Roussel, J D Influence of season and reproductive status on peripheral plasma progesterone levels in the lactating bovine. [electronic resource] - International journal of biometeorology Mar 1977 - 85-91 p. digital Publication Type: Journal Article ISSN: 0020-7128 Standard No.: 10.1007/BF01552969 doi Subjects--Topical Terms: AcclimatizationAnimalsCattleFemaleLactationPregnancyProgesterone--bloodReproductionSeasons