Kalidoss, K. C.; Nagappan, P.; A, I.; Kathirvel, S. K.; Chandran, J. P. U. Economic Analysis of Black Pepper Production in Kolli Hills: A Study of Costs and Returns . injoere 2026, 6 (S3), 119-129. https://doi.org/10.70102/IJARES/V6S3/6-S3-738.