Genetic evaluation of breeding efficiency estimated by Tomar ‎equation in Holstein cattle. The Iraqi Journal of Veterinary Medicine, [S. l.], v. 31, n. 2, p. 142–150, 2007. DOI: 10.30539/3y3et115. Disponível em: https://jcovm.uobaghdad.edu.iq/index.php/Iraqijvm/article/view/1968.. Acesso em: 22 feb. 2025.