Pati, P. (2018) “Prediction of Gestational Age in Bitches by Ultrasonic Measurement of Placental Thickness”, International Journal of Livestock Research. India, 8(12), pp. 285–289. Available at: http://ijlr.org/ojs_journal/index.php/ijlr/article/view/1480 (Accessed: 16 June 2026).