Utjecaj obogaćenog okoliša na dobrobit, mliječnost i kakvoću mlijeka koza sanske pasmine : doktorski rad = Effects of enriched environment on welfare, milk production and milk quality of saanen goats : doctoral thesis - Lončarić, Nataša, veterinarka; Gregurić Gračner, Gordana; Grizelj, Juraj (2020)