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- 12033496 contributor B496294.
- 12033496 contributor B496295.
- 12033496 created "1912.".
- 12033496 date "1912".
- 12033496 date "1912.".
- 12033496 dateCopyrighted "1912.".
- 12033496 extent "16 p.".
- 12033496 issued "1912".
- 12033496 issued "1912.".
- 12033496 language "eng".
- 12033496 publisher "Boston, Wright & Potter Printing Co., State Printers,".
- 12033496 subject "HD7260 .M3".
- 12033496 subject "Hazardous occupations.".
- 12033496 subject "Industrial hygiene.".
- 12033496 title "Hygiene of occupations. Permanent exhibit of the Massachusetts State board of health, prepared for the board by William C. Hanson, M.D. ... Material collected by state inspectors of health and other agents of the State Board of Health while making a study of the subject during the years 1905-1912.".
- 12033496 type "text".