(Dust concentrations) can be high.Logical formLearned from14 sentences. Scientists may undergo concentration.Logical formLearned from14 sentences. Scholars may undergo concentration.Logical formLearned from14 sentences. Activities may undergo concentration.Logical formLearned from14 sentences. Concentration can be selective.Logical formLearned from14 sentences. Measures can be constituted-of-or-filled-with concentration.Logical formLearned from14 sentences. Risks may undergo concentration.Logical formLearned from14 sentences. Concentrations may be attained.Logical formLearned from14 sentences. Moisture may undergo concentration.Logical formLearned from14 sentences. Concentration can be on a task.Logical formLearned from14 sentences. Concentration may be reduced.Logical formLearned from14 sentences. Concentrations can be endogenous.Logical formLearned from14 sentences. Concentrations can be consideredtoxic.Logical formLearned from14 sentences. Concentrations can be in an urine.Logical formLearned from14 sentences. Concentration can be determined.Logical formLearned from14 sentences.