Ut, Le Van, and Vo Thi Bach Mai. 2019. “Effect of Gibberellic Acid and Urea on the Growth of Pineapple Fruit (Ananas Comosus (L.) Merr.)”. Science & Technology Development Journal: Natural Sciences 3 (2), 82-89. https://doi.org/https://doi.org/10.32508/stdjns.v3i2.803.