“Effects of Blended Polyvinyl Alcohol Urea on the Growth, Yield and Chemical Content of Tomato (Lycopersicon Esculentum L. Mill): Effects of Polyvinyl Alcohol Urea Blended on the Growth of Tomato”. International Journal of Biology and Chemistry 13, no. 2 (December 31, 2020): 59–68. Accessed July 29, 2026. https://ijbch.kaznu.kz/index.php/kaznu/article/view/434.