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Measuring means for hydrogeological field research. Types. Main parameters. General requirements
Document status: Active
Bag and pocket filters. Type and basic parameters
Document status: Active
Niobium pentoxide. Ionometry method for determination of fluor content
Document status: Active
Bauxite. Methods for determination of silica dioxide content
Document status: Active
Heading machines having cutter heads mounted on booms. Basic parameters and dimensions. General technical requirements
Document status: Withdrawn