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The study by Dharani et al. 1 represents a very informative comparison between objective light meter measurements and the more subjective diary monitoring of time spent outdoors, both of which have ...
American Journal of Botany, Vol. 16, No. 5 (May, 1929), pp. 354-390 (42 pages) 1. Plants were grown under four sets of light conditions: (1) under cloth shades inside a greenhouse; (2) under cloth ...
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