Bombing may undergo concentration.Logical formLearned from8 sentences. (Air pollutants) may undergo concentrations.Logical formLearned from8 sentences. (Pollutant concentrations) can be airborne.Logical formLearned from8 sentences. Decreases can be in concentration.Logical formLearned from8 sentences. Concentration can be artificial.Logical formLearned from8 sentences. (Concentration camps) may pertain-to persons.Logical formLearned from8 sentences. Fibers may undergo concentration.Logical formLearned from8 sentences. Rays may undergo concentration.Logical formLearned from8 sentences. (Chemical agents) may undergo concentrations.Logical formLearned from8 sentences. A difference can be between concentration.Logical formLearned from8 sentences. A citizen can be in a (concentration camp).Logical formLearned from8 sentences. Finds may undergo concentration.Logical formLearned from8 sentences. Anions may undergo concentrations.Logical formLearned from8 sentences. Concentration can be radioactive.Logical formLearned from8 sentences. Command may undergo concentration.Logical formLearned from8 sentences.