A study of noise attenuation efficiency in earplugs modified by inserting lead capsules into their stems

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Suggested Citation

Sitthichok Puangthongthub A study of noise attenuation efficiency in earplugs modified by inserting lead capsules into their stems. Thesis (M.Sc. (Industrial Hygiene and Safety))--Mahidol University, 1999. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/103619

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