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Author Title Year Publication Volume Pages
Arnott, J. T. Growth Response of White and Englemann Spruce Seedlings to Extended Photoperiod Using Three Light Intensities 1982 Technical Report: Pacific Forestry Centre
Lumsden, P. J., & Furuya, M. Evidence for Two Actions of Light in the Photoperiodic Induction of Flowering in <italic>Pharbitis nil</italic> 1986 Plant and Cell Physiology
Adams, J. Duration of Light and Growth 1924 Annals of Botany 38 509-523
Adams, J. The Effect on Certain Plants of altering the Daily Period of Light 1923 Annals of Botany 37 75-94
Moore, B. The Relative Length of Day and Night 1920 Ecology 1 234-237