Roca-FernándezA. I., FerrisC. P., and González-RodríguezA. 2013. “Short Communication. Behavioural Activities of Two Dairy Cow Genotypes (Holstein-Friesian Vs. Jersey X Holstein-Friesian) in Two Milk Production Systems (grazing Vs. Confinement)”. Spanish Journal of Agricultural Research 11 (1), 120-26. https://doi.org/10.5424/sjar/2013111-2682.