Persons may take sampling.Logical formLearned from2 sentences. Surfaces may undergo a sampling.Logical formLearned from2 sentences. Agencies may conduct sampling.Logical formLearned from2 sentences. Dhs may develop (sampling strategies).Logical formLearned from2 sentences. Sampling may play a role.Logical formLearned from2 sentences. Sampling can be by itself.Logical formLearned from2 sentences. A (grid sampling approach) may be used.Logical formLearned from2 sentences. (Sampling methods) may be validated.Logical formLearned from2 sentences. Opinions may differ on (sampling methods).Logical formLearned from2 sentences. (Sample material) can be appropriate for sampling.Logical formLearned from2 sentences. Some activities may be related to sampling.Logical formLearned from2 sentences. An one of a number of (sampling methods) may be used.Logical formLearned from2 sentences. (Sampling methods) can be approved.Logical formLearned from2 sentences. Expertise can be in sampling.Logical formLearned from2 sentences. A (sampling frame) may include some rural communities.Logical formLearned from2 sentences.