M. Zahari, N. ., A Aiman, M. ., Nurhikmah, F. ., & H Zawawi, M. . (2023). Air Quality Study at Different Elevation Levels Using Drone Payload Air Quality Measurement Device (D-PAQ). KnE Social Sciences, 8(20), 77–88. https://doi.org/10.18502/kss.v8i20.14595