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John Nash Ott’s 1973 book explores the impact of light on human health and emotional well-being
(NaturalNews) John Nash Ott's 1973 book, "Health and Light," explores the impact of light on human health and emotional well-being, based on his research...
 | (NaturalNews) John Nash Ott's 1973 book, "Health and Light," explores the impact of light on human health and emotional well-being, based on his research... |
