Agrega una trama en tu idiomaHow the miners of the Don coal basin (one of the industrial regions of Ukraine) were striving to fulfill in four years their part of the Five Year Plan.How the miners of the Don coal basin (one of the industrial regions of Ukraine) were striving to fulfill in four years their part of the Five Year Plan.How the miners of the Don coal basin (one of the industrial regions of Ukraine) were striving to fulfill in four years their part of the Five Year Plan.