Yen, Nguyen Thi, and Le Van Tri. “Economic Effects of the Organic-Microorganism Complex Fertilizer (omc) Supply and the Fito-Leafat Spray on the Growth and the Development of Cabbage and Chinese Lettuce Grown in Dong Anh District, Hanoi City”. Academia Journal of Biology 27, no. 4 (November 11, 2014): 81–87. Accessed April 23, 2024. https://vjs.ac.vn/index.php/vjbio/article/view/5292.