Romanovich I.F.,  Koplus A.V.,  Timofeev I.N. Promyshlennye tipy mestorozhdeniy nemetallicheskikh poleznykh iskopaemykh./Romanovich I.F.,  Koplus A.V.,  Timofeev I.N. Industrial types of deposits of non-metallic minerals. In Russian - landofmagazines.com

TransliterationRomanovich I.F., Koplus A.V., Timofeev I.N. Promyshlennye tipy mestorozhdeniy nemetallicheskikh poleznykh iskopaemykh.

In EnglishRomanovich I.F., Koplus A.V., Timofeev I.N. Industrial types of deposits of non-metallic minerals. In Russian

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