https://www.zazemiata.org/wp-content/uploads/2018/02/zzlogo.png00violetahttps://www.zazemiata.org/wp-content/uploads/2018/02/zzlogo.pngvioleta2020-02-24 14:00:302020-02-24 14:00:30Доклад за геологията и налични въглищни запаси в находище Мини Марица Изток
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