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Washitani, I., Kishino, M. & Takenaka, A. A preliminary study of micro-spatial heterogeneity in the light spectral environment of seeds and seedlings in a grassland. Ecol. Res. 4, 399–404 (1989). https://doi.org/10.1007/BF02348458
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DOI: https://doi.org/10.1007/BF02348458