CHRISTODOULOPOULOS (Γ. ΧΡΙΣΤΟΔΟΥΛΟΠΟΥΛΟΣ) G., ROUBIES (Ν. ΡΟΥΜΠΙΕΣ) N., KARATZIAS (Χ. ΚΑΡΑΤΖΙΑΣ) H. and PAPASTERIADIS (Α. ΠΑΠΑΣΤΕΡΙΑΔΗΣ) A. 2018. Vitamin A concentrations in dairy cows of Thessaloniki ’s county. Journal of the Hellenic Veterinary Medical Society. 52, 4 (Jan. 2018), 257–263. DOI:https://doi.org/10.12681/jhvms.15454.