- Geology 6
- Vibration, Dynamical Systems, Control 6
- Biogeosciences 5
- Engineering Design 5
- Geochemistry 5
- Mechanical Engineering 5
- Solid Mechanics 5
- Earth Sciences, general 4
- Engineering Fluid Dynamics 4
- Materials Science, general 4
- Computer-Aided Engineering (CAD, CAE) and Design 3
- Education, general 3
- Engineering Acoustics 3
- Environmental Science and Engineering 3
- Higher Education 3
- Hydrology/Water Resources 3
- Professional & Vocational Education 3
- Science Education 3
- Structural Materials 3
- Terrestrial Pollution 3