Sakphet, Norathep, Chatirot Jitrugtham, Wanida Petlamul, Vilerswat Noosaeng, Pikul Somjit, and Sanit Haruehansawasin. 2026. “Progressive Web Application Geographic Information System for Offline Spatial Data Collection: A Case Study of Robusta Coffee Disease and Pest Survey”. KKU Science Journal 54 (1):232-51. https://doi.org/10.14456/kkuscij.2026.17.