[1] Consumer Product Safety Commission

[2] The Resourceful Schools Project

[3] Center for Ecological Technology

[4] EPA

[5] Lohr, V., Studies at Washington State University, Department of Horitculture, Interior Plants Improve Worker productivity and reduce stress in a windowless Environment

[6] Zuckeman, M., Development of Situation-specific Trait-state Test for Prediction and Measurement of Affective Responses, Journal of Clinical Psycology, 1977

[7] Bergs, J., VanDortmont, Tove Fjeld Control Group Studies, Netherlands, 2001

[8] Welford, A.T. (Ed), Reaction Times, Academic Press, London, 1980

[9] Russel, H., Environmental Psychology Studies, Surrey University, UK,

[10] National Coalition for Pesticide-Free Lawns

[11] Pesticide Action Network


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