BICHMANN, Mathias. Trächtigkeitsdiagnose per Ultraschall. agricultural engineering.eu, [S. l.], v. 52, n. 4, p. 196–197, 1997. DOI: 10.15150/lt.1997.2614. Disponível em: http://195.37.233.21/landtechnik/article/view/1997-52-4-196-197. Acesso em: 16 nov. 2024.