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Motor vehicles with hydrogen fuel cells. Fuel cell stack systems with proton exchange membrane. Test methods
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Water flow measurement in hydromelioration and water economics systems. Basic principles
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Test code for metalcutting machine tools. Part 7. Geometric accuracy of axes of rotation
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Seamless steel pipes for transportation of hydrogen gas. Technical specificationsv
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Lanthanum, gadolinium, yttrium and their oxides. Method of determination of ties as oxides of neodymium, samarium, europium and erbium
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