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3. The use of a bovine plasma progesterone elisa kit to measure progesterone in equine, ovine and canine plasmas;EGKERSALL;Veterinary Record,1987
4. Ultrasonographic assessment of abnormal pregnancy;ENGLAND;Veterinary Clinics of North America: Small Animal Practice,1998
5. Fertilisation in vitro of oocytes matured in vivo in the blue fox (Alopex lagopus);EARSTAD;Journal of Reproduction and Fertility Supplement,1993a