Valkova, E. Study of the content of copper in waters and Zebra mussel (Dressena polymorpha) from Ovcharitsa Dam, Stara Zagora region, Bulgaria. 2019 с. 182-186,.
Valkova, E. Study of the content of copper in waters and Zebra mussel (Dressena polymorpha) from Ovcharitsa Dam, Stara Zagora region, Bulgaria. 2019 с. 182-186,.
Valkova, E. (2019) Study of the content of copper in waters and Zebra mussel (Dressena polymorpha) from Ovcharitsa Dam, Stara Zagora region, Bulgaria, с. 182-186,.
Valkova, E. (2019). Study of the content of copper in waters and Zebra mussel (Dressena polymorpha) from Ovcharitsa Dam, Stara Zagora region, Bulgaria. с. 182-186.
Valkova E. Study of the content of copper in waters and Zebra mussel (Dressena polymorpha) from Ovcharitsa Dam, Stara Zagora region, Bulgaria. 2019. p. с. 182-186.