| http://www.w3.org/ns/prov#value | - The list of substances is quite lengthy and includes such items as amino acids, proteins, phenols, creosols, terpenoids, fats, carbohydrates, hydrocarbons, plant hormones, vitamins, carotenoids and various organic acids such as fatty, acetic, lactic, glycolic, malic and citric (deGraaf, 1981; Moe, 1989).
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