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- Withrow R. B., Benedict H. M. PHOTOPERIODIC RESPONSES OF CERTAIN GREENHOUSE ANNUALS AS INFLUENCED BY INTENSITY AND WAVELENGTH OF ARTIFICIAL LIGHT USED TO LENGTHEN THE DAYLIGHT PERIOD. Plant Physiol. 1936 Apr;11(2):225–249. doi: 10.1104/pp.11.2.225. [DOI] [PMC free article] [PubMed] [Google Scholar]









