Paul, Volker H. Krankheiten und Schadlinge des Rapses [Текст] / V. H. Paul. - Paderborn : Gelsenlkirschen - Buer Mann, 1988. - 121 S. -ISBN3-7862-0077-7 - National Scientific Agricultural Library ➤ National Academy of Agrarian Sciences of Ukraine 【 nnsgb naan 】