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Information technology. Smart city. An upper level ontology for smart city indicators
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United power system and isolated power systems. Relay protection and automatic. Automatic control devices of frequency and active power of hydraulic power units of hydraulic and pumped storage power plants. Norms and requirements
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Assembling units and pipeline parts. Fillets for Pnom 9,81-98,1 MPa (100-1000 kgf/cm2). Construction and dimensions
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Fertilizers. Determination of total nitrogen in urea
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Industrial automation systems and integration. Product data representation and exchange. Part 1112. Application module. Specification control
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