• Design and Conduct of Occupational Epidemiology studies

• Koo Jung-Wan

• Korean Journal of Occupational Health   1991  Volume.30  No.1 35 ~ 45

• Documentation of the TLV for Subsoning in Workplace

• Korean Journal of Occupational Health   1991  Volume.30  No.1 19 ~ 34

• Review on Manganese poisoning

• Lim Young

• Yim Hyeon-Woo, Kim Kyung-Ah, Yun Im-Goung

• Korean Journal of Occupational Health   1991  Volume.30  No.1 13 ~ 18

• Sampling and Analysis of Air Contaminants

• Kim Jung-Man

• Korean Journal of Occupational Health   1991  Volume.30  No.1 1 ~ 12