Andriyanti, S. R., Hariadi, M., Darsono, R. and Srianto, P. (2017) “Test Various Estrus Detection Device Against Pregnancy Rates on Dairy Cows in Cooperative Tunas Setia Baru Kabupaten Pasuruan”, KnE Life Sciences, 3(6), pp. 712-717. doi: 10.18502/kls.v3i6.1201.