Hauke-Kowalska, M., Borowiak, E., Barzdajn, W., Kowalkwski, W., Korzeniewicz, R. and Wawro, T. (2019) “Cone and seeds variability in seed orchards and seed stands of Pinus sylvestris L. ”, Baltic Forestry, 25(2), pp. 187–192. doi: 10.46490/vol25iss2pp187.