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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