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Authors
- Walpole, Robert H., author9
- Nelson, Norton A., author8
- Hatch, Theodore F., author7
- Eichna, Ludwig W. (Ludwig Waldemar), 1908- author4
- Horvath, Steven M., author4
- Canfield, William Buckingham, 1855- author1
- Hollingsworth, E. W., author1
- Illinois. Department of Public Health. Division of Industrial Hygiene, author.1