(1)
Ringberg, T.; Aakvaag, A. The Diagnosis of Early Pregnancy and Missed Abortion in European and Svalbard Reindeer (Rangifer Tarandus Tarandus and Rangifer Tarandus Platyrhyncus. Ran 1982, 2 (1), 26-30. https://doi.org/10.7557/2.2.1.421.