1 Subjects: “...gravel-bed stream...”

2 Subjects: “...gravel bed river...”

3 Subjects: “...gravel content...”

4 Subjects: “...gravel beaches...”

5 Subjects: “...gravel-rubber mixtures...”

6 Subjects: “...gravel-rubber mixtures...”

7

8 “... interventions, mining of sand and gravel is the most disastrous one, as the activity threatens the very...”

9 “.... In addition, shallow groundwater levels and gravel pits increase the vulnerability of the environment even...”

10 “... naturally percolates through the ground into aquifers (which are layers of sand and gravel that contain...”

11 Table of Contents: “... Disciplinary Analyses on Hydro Rotor using Computational Hydrodynamic Simulation (CHS) -- Sand-gravel mining...”

12 Table of Contents: “... species.Sanitary pollution. Dredge spoils dumping.Extraction of sand and gravel.Offshore oil and gas production...”