Title Science and Technology Indonesia e-ISSN:2580-4391 p-ISSN:2580-4405 Vol. 5, No. 4, October 2020 Subject Index 1. Biogenic Amines 2. Chromatography 3. Classification System 4. Conveyor Belt Speed 5. Cutting Stock Problem 6. Disconnected 7. Diurnal Rainfall 8. ECMWF-ERA5 9. Electrochemical Sensor 10. Finite Difference Method 11. Graph 12. Histamine 13. Hyperbolic Schemes 14. Labeled, Loops 15. Mathematical Models 16. Näıve BayesTwo-Dimensional Waves 17. Optical Sensor 18. Partial Differential Equations 19. Pattern Generation 20. Peatland 21. SESAME 22. Set Covering Model 23. Vertices 1