Sahlén, K. (1992). Anatomical and physiological ripening of Pinus sylvestris L. seeds in northern Fennoscandia. Dept. of Silviculture, Swedish University of Agricultural Sciences.
Chicago-стиль цитированияSahlén, Kenneth. Anatomical and Physiological Ripening of Pinus Sylvestris L. Seeds in Northern Fennoscandia. Umeå, Sweden: Dept. of Silviculture, Swedish University of Agricultural Sciences, 1992.
MLA-цитированиеSahlén, Kenneth. Anatomical and Physiological Ripening of Pinus Sylvestris L. Seeds in Northern Fennoscandia. Dept. of Silviculture, Swedish University of Agricultural Sciences, 1992.
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