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Do Bells Affect Behaviour and Heart Rate Variability in Grazing Dairy Cows?
Johns J,
Patt A,
Hillmann E
(2015)
Do Bells Affect Behaviour and Heart Rate Variability in Grazing Dairy Cows?.
PLOS ONE 10(6): e0131632.
https://doi.org/10.1371/journal.pone.0131632