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RuРазработка нефтяных месторождений
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Stavropol district, rubberized plain and Kalmyk-Salsky steppes: (new Squares of Grozneft)
Stavropol district, rubberized plain and Kalmyk-Salsky steppes: (new areas of Grozneft).1934.
Dagestan oil deposits: (new areas of Grozneft)
Dagestan oil deposits: (new areas of Grozneft).1934.
Oil deposits of advanced ridges and black mountains: (new areas of Grozneft)
Oil deposits of advanced ridges and black mountains: (new areas of Grozneft).1933.
The commercial areas of formidable
The commercial areas of formidable.1933.
Pecherso-Ukhta oil
Gansberg, A.G. Pechetero-Ukhta oil.Moscow: A.P.Kornilov, 1904.