Coal and the Environment 1991 Directed by Yevhen Bielkin Вугілля та екологія
Concerns about coal are inevitably linked to concerns about the environment. Development of original technologies for implementation in Kuzbass, Donbas, and Karaganda.
Concerns about coal are inevitably linked to concerns about the environment. Development of original technologies for implementation in Kuzbass, Donbas, and Karaganda.
