1. Preliminary industrial hygiene survey of Indiana industries Author(s): Indiana. Bureau of Industrial Hygiene, author. Publication: Indianapolis, Indiana : Indiana State Board of Health, 1939 Subject(s): Occupational HealthHealth SurveysIndiana
2. Evaluation of the industrial hygiene problems of Illinois Author(s): Illinois. Department of Public Health. Division of Industrial Hygiene, author. Publication: Chicago, Illinois : Department of Public Health, 1939 Subject(s): Occupational ExposureAir Pollutants, OccupationalHealth SurveysIllinois
