Поиск полезных ископаемых (геология)
Природные условия ведения поисковых работ.
Фильм по геологии (поиску полезных ископаемых).
5 years ago 00:29:47 270
8 years ago 00:13:00 121
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1 year ago 00:12:30 14
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9 years ago 00:08:53 3.1K
6 years ago 01:35:48 4.7K
10 months ago 01:27:12 1
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11 months ago 00:12:21 12
4 years ago 00:09:03 3
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8 years ago 00:10:27 1
8 years ago 00:10:42 1
