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1 Respiratory Symptoms, Cognitions about Working Environments and Pulmonary Functions in Coal Mine Workers
Dong Hyun Yoon, Hae Sung Nain, Jun Ho Shin, Myung Ho Son, Myung Ha]f Lee, Seok Joon Sohn, Byong Woo Kirn
Korean J Occup Environ Med.1994;6(2):302-315.   Published online 2019 February 1     DOI: http://dx.doi.org/10.35371/kjoem.1994.6.2.302
   

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