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Murin, A. (1997). Karyotaxonomy of some medicinal and aromatic plants. Thaiszia 7(1): 75-88. {a} Dep. Bot., Fac. Sci., Comenius Univ., Revova 39, 811 02 Bratislava, Slovakia

Ovecka, M., M. Bobak, et al. (1997). Papaver somniferum regeneration by somatic embryogenesis and shoot organogenesis. Biologia Plantarum Prague 40(3): 321-328. {a} Inst. Bot., Slovak Acad. Sci., Dubravska cesta 14, 842 23 Bratislava, Slovakia

Ovecka, M., M. Bobak, et al. (1997). Development of shoot primordia in tissue culture of Papaver somniferum L. Biologia Plantarum Prague 39(4): 499-506. {a} Inst. Botany, Slovak Academy Sciences, Dubravska Cesta 14, 842 23 Bratislava, Slovakia

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