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A. V. Plyusnin
Perm State University, 15 Bukireva Str., Perm 614600, Russia
Russian Federation
assistant of department of regional and oil&gas geology
T. V. Karaseva
Perm State University, 15 Bukireva Str., Perm 614600, Russia
Russian Federation
professor, Chair of department of regional and oil&gas geology
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