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		Panjaitan, Budianto, 		Pambudi, Ridho, 		Amansyah, Romi, 		Akmal, Muslim, AND 		Siregar, Tongku Nizwan.
" Kadar Estrogen Darah dan Tingkat Keasaman (pH) Mukus Serviks Sapi Aceh Memengaruhi Daya Penetrasi Spermatozoa" <em>Jurnal Veteriner</em> [Online], Volume 21 Number 3 (30 December 2020)