1 Ministry of education, "School environment, health and food hygiene manual" 2006
2 Ministry of environment, "Official test method indoor air quality"
3 National Institute of Environmental Research, "Nursery facilities indoor air quality measurement Technique" 2006
4 Ministry of gender equality and family, "Nursery facilities by year child current state"
5 Ministry of environment., "Multiuse facility Indoor air quality check results"
6 Jang, M. S, "Measuring and improving methods for indoor air quality in childcare centers" Hanyang university 2009
7 Ministry of environment, "Indoor air quality Management"
8 Kwang. G. H, "Indoor Air Quality Management" Munundong 30-35, 2012
9 Kang, M, S., "Home day care center director'sexperience" Paichai university 2013
10 Jeong, J. P., "Daycare center Indoor Air Quality research" Gyeonggi Institute of Health & Environment 2013
1 Ministry of education, "School environment, health and food hygiene manual" 2006
2 Ministry of environment, "Official test method indoor air quality"
3 National Institute of Environmental Research, "Nursery facilities indoor air quality measurement Technique" 2006
4 Ministry of gender equality and family, "Nursery facilities by year child current state"
5 Ministry of environment., "Multiuse facility Indoor air quality check results"
6 Jang, M. S, "Measuring and improving methods for indoor air quality in childcare centers" Hanyang university 2009
7 Ministry of environment, "Indoor air quality Management"
8 Kwang. G. H, "Indoor Air Quality Management" Munundong 30-35, 2012
9 Kang, M, S., "Home day care center director'sexperience" Paichai university 2013
10 Jeong, J. P., "Daycare center Indoor Air Quality research" Gyeonggi Institute of Health & Environment 2013