Gendek, A. ., Aniszewska, M., Tulska, E., & Siwek, J. (2021). Morphological variability of Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) cones in the context of seed extraction: Morphological variability of Douglas fir cones. Baltic Forestry, 27(2). https://doi.org/10.46490/BF498