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Start Over Author Health, Education and Welfare Dept. Sudoc Stem HE 20.7102

31. Working with formaldehyde.

Corporate/Agency Authors:
National Institute for Occupational Safety and Health and Health, Education and Welfare Dept.
Publisher:
National Institute for Occupational Safety and Health
Date:
[1973.]
SuDoc number:
HE 20.7102:F 76

32. Working with mercury in industry.

Corporate/Agency Authors:
National Institute for Occupational Safety and Health and Health, Education and Welfare Dept.
Publisher:
National Institute for Occupational Safety and Health
Date:
[1973.]
SuDoc number:
HE 20.7102:M 53

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