1. Progesterone concentrations in peripheral blood plasma of heifers following a combined PMSG/PGF2α treatment in comparison with values during normal estrus cycle;Agthe;Berl. Münch. Tierärztl. Wochenschr.,1976
2. Non surgical bovine embryo recovery;Alexander;Vet. Rec.,1976
3. Erfahrungen mit der unblutigen Eigewinnung;Baumgärtner;Zuchthygiene,1977
4. Superovulation;Betteridge,1977
5. Embryo collection by non surgical methods;Brand,1977