Engineering geology Congresses 38 Soil mechanics 38 Rock mechanics 33 Foundations 12 Geology 7 Mathematics 7 Testing 6 Design and construction 5 Groundwater 5 Periodicals 5 Tunneling 5 Excavation 4 Mathematical models 4 Soils 4 Clay 3 Coral reefs and islands 3 Dams 3 Geology, Economic 3 Grouting 3 Hydrogeology 3 Piling (Civil engineering) 3 Statistical methods 3 Abstracts 2 Boundary element methods 2 Data processing 2 Earthquake engineering 2 Field work 2 Geophysical methods 2 Geophysics 2