Trikurniadewi, Nastiti, and Zufra Inayah. “Screening of Blood Hemoglobin Levels for Filling Station Operators in Gresik”. Kontribusia : Research Dissemination for Community Development, vol. 6, no. 2, Aug. 2023, pp. 217-22, doi:10.30587/kontribusia.v6i2.6147.