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Letchamo, W.; Ward, W.; Heard, B.; Heard, D., Essential oil of Valeriana officinalis L. cultivars and their antimicrobial activity as influenced by harvesting time under commercial organic cultivation, J. Agric. Food Chem., 2004, 52, 12, 3915-3919, https://doi.org/10.1021/jf0353990 . [all data]