Christ, Mara Vicelle Ruviaro, et al. “CORRELATION BETWEEN WEIGHT OF PLACENTA, TIME OF PLACENTAL DELIVERY AND RATE OF DEAD-BORN IN PIGLETS”. Arquivos De Ciências Veterinárias E Zoologia Da UNIPAR, vol. 15, nº 1, abril de 2013, https://unipar.openjournalsolutions.com.br/index.php/veterinaria/article/view/4162.