Lien, Vu Thi, Huynh Thi Kim Hoi, and Le Xuan Canh. “Results of Study on Earthworms Living in Some Covered Vegetation Soils of the Sonla Province”. Academia Journal of Biology 28, no. 1 (March 31, 2006): 23–29. Accessed December 7, 2022. https://vjs.ac.vn/index.php/vjbio/article/view/827.