“Ultrasound Guided Diagnosis of Anoestrus and Its Treatment in Postpartum Crossbred Holstein-Friesian Cows”. Bangladesh Veterinarian 36, no. 1-2 (December 31, 2019): 33–41. Accessed June 29, 2026. https://www.banglajol.info/index.php/BVET/article/view/55748.