Z. Kassab-Bashi, A., Th. Saieed, N., & M. Omar, O. (2014). Doubling the Chromosome Number of Black Poplar Trees (Populus nigra L.) by Colchicine In vitro. Rafidain Journal of Science, 25(5), 1–16. https://doi.org/10.33899/rjs.2014.131363