33. Potential of sunflower (Helianthus annuus L.) for phytoremediation of soils contaminated with heavy metals

Author: Violina Angelova, Radka Ivanova, Zhivko Todorov, Krassimir Ivanov

35. Content of the heavy metals copper and zinc in Akmolinskoj district of Northern Kazakhstan in relation to zero- and traditional growing technology of grain-legume crops

Author: Asiya Ansabaeva, Nurlan Serekpaev, Vladislav Popov