A (water sampling) can be needed.Logical formLearned from2 sentences. Months can be prior to (blood sampling).Logical formLearned from2 sentences. Months can be prior to (blood sampling).Logical formLearned from2 sentences. (Sampling biases) can be seasonal.Logical formLearned from2 sentences. (Sampling biases) can be in data.Logical formLearned from2 sentences. Some permits can be a sampling of some activities.Logical formLearned from2 sentences. (Pesticide use) can be on a day of sampling.Logical formLearned from2 sentences. Tests may include sampling of pesticides.Logical formLearned from2 sentences. Pesticides may undergo a sampling.Logical formLearned from2 sentences. Sites can be for (perchlorate sampling).Logical formLearned from2 sentences. Sampling can be in some metropolitan areas.Logical formLearned from2 sentences. Sampling may find levels of arsenic on a surface of wood.Logical formLearned from2 sentences. Differences can be between some (sampling programs).Logical formLearned from2 sentences. Variety can be from a (sampling program).Logical formLearned from2 sentences. (Importance sampling techniques) may undergo a use.Logical formLearned from2 sentences.