A maximum of some persons may die in (concentration camps).Logical formLearned from6 sentences. A loss can be in concentration.Logical formLearned from6 sentences. Some years can be in a (concentration camp).Logical formLearned from6 sentences. (Enemy air defenses) may undergo concentration.Logical formLearned from6 sentences. Involvement can be in (concentration camps).Logical formLearned from6 sentences. Concentrations of a drug may be found in blood.Logical formLearned from6 sentences. A service can be at a (concentration camp).Logical formLearned from6 sentences. (Concentration camps) may start in a month.Logical formLearned from6 sentences. Tens of millions of pages of (concentration camp records) may be copied.Logical formLearned from6 sentences. Pages can be constituted-of-or-filled-with (concentration camp records).Logical formLearned from6 sentences. Seals may undergo concentration.Logical formLearned from6 sentences. Valuables may undergo concentrations.Logical formLearned from6 sentences. Files can be on (concentration camps).Logical formLearned from6 sentences. Trouble can be with concentration.Logical formLearned from6 sentences. (Rescue teams) may encounter concentrations of gas.Logical formLearned from6 sentences.