Power supply systems, nets, sources, converters and receivers of electric energy. Rated voltages to 1000 v and tolerances

Norma vydána dne 1.7.1984

Electrical items. Earth terminals and earth signs. Design and dimensions

Norma vydána dne 1.7.1976

Aluminium alloys. Method for determination of hydrogen content in molten metal

Norma vydána dne 1.1.1977

Aluminium and aluminium alloys. Methods for determination of hydrogen in solid metal by vacuum hot extraction

Norma vydána dne 1.1.2000

Specilized box pellets for rotatoes, vegetables, fruits and melon cultures. Specifications

Norma vydána dne 1.1.1989

Apparatus telegraph, printing start-stop, 5-element code. Methods of electric parameters measuring

Norma vydána dne 1.1.1982

Chalk. General requirements for methods of analysis

Norma vydána dne 1.1.1987

Chalk. Method for determination of water-soluble matters content

Norma vydána dne 1.1.1987

Chalk. Method for determination of sulphate ions content in water extract

Norma vydána dne 1.1.1987

Chalk. Method for determination of chloride ions content in water extract

Norma vydána dne 1.1.1987