BABU, P N RAVINDRAN, R BALAKRISHNAN, K NIRMAL. “Morphometrical Studies on Black Pepper (Piper Nigrum L.). I. Cluster Analysis of Black Pepper Cultivars”. Journal of Spices and Aromatic Crops 6, no. 1 (June 23, 1997): 09–20. Accessed May 6, 2024. https://updatepublishing.com/journal/index.php/josac/article/view/4389.