SINGH, D, C P SWARNKAR, F A KHAN, P S K BHAGWAN, and S C DUBEY. 2011. “In Vitro Ovicidal and Larvicidal Activity of Andrographis Paniculata (Kalmegh) Leaves on Haemonchus Contortus”. The Indian Journal of Animal Sciences 81 (2). https://epubs.icar.org.in/index.php/IJAnS/article/view/4025.