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Fertilizers. Extraction of soluble phosphorus according to Petermann at 65 °C
Document status: Active
Fiberglass-reinforced thermosetting plastic pipes and parts of pipelines. Method for determination long-term specific ring creep stiffness and wet creep factor under wet or dry conditions
Document status: Active
United power system an disolated power systems. Relay protection and automation. Automatic voltage regulators of strong action of synchronous generators. Testing and checking the settings
Document status: Active
Plywood with outer layers of deciduous veneer for general use. Specifications
Document status: Active
Diamond grinding wheels, straight cup wheel shape 6A2. Dimensions
Document status: Withdrawn