Kaur, M. and Kumar, M. (2019) “Study of Avian Species in Relation to Exotic Trees at Ludhiana, Punjab”, International Journal of Bio-resource and Stress Management, 10(Oct, 5), pp. 507–512. Available at: https://www.ojs.pphouse.org/index.php/IJBSM/article/view/3871 (Accessed: 21 September 2025).