Nalnophakoon, Nati. “Postnatal cytodifferentation of the columnar and basic cells in the epithelium of the terminal segment of the ram epididymis”. Agriculture and Natural Resources 14, no. 1 (January 1, 1980): 54–68. accessed September 18, 2026. https://li01.tci-thaijo.org/index.php/anres/article/view/240831.