temps (durée) (1) test (1) science (1) bactériologie (1) lait (1) santé (1) expérience scientifique (1) effet (1) taux (1) Color (1) Vacuum (1) Udder (1) Time (1) Theater (1) Social sciences (1) Science (1) Milking (1) Milk plants (1) Milk (1) Mastitis (1) Lactation (1) Health (1) Experiments (1) Drama (1) Days (1) Dairy plants (1) Color (1) Cells (1) Camels (1) Bacteriology (1)