Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen— 25 стр.
Valves - Materials for bodies, bonnets and covers - Part 3: Cast irons specified in European standards; German version EN 1503-3:2000 + AC:2001— 4 стр.
Valves - Materials for bodies, bonnets and covers - Part 3: Cast irons specified in European standards; German version EN 1503-3:2000 + AC:2001— 4 стр.