Singh, M., Das, S. and Avasthe, R. (2020) “Effect of multipurpose trees on production of large cardamom and soil fertility in agroforestry systems in Sikkim, Himalaya”, Indian Journal of Agroforestry, 20(2). Available at: https://epubs.icar.org.in/index.php/IJA/article/view/96728 (Accessed: 27 June 2026).