REFERENCES
- Nelson, D. Northern Illinois Manager, Division of Safety, Inspection, and Education, Illinois Department of Labor, personal communication, August 22, 1994.
- Fanger, P.O. Energy and Buildings 1988, 12, 1–6.
- Jejtersen, ].; Mayer, E. Proceedings of Indoor Air, 1,95.
- National Weather Service Illinois Climatologist, 217-333–0729.