Ut, L.V. and Mai, V.T.B. 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 (Aug. 2019), 82-89. DOI:https://doi.org/https://doi.org/10.32508/stdjns.v3i2.803.