Structuring principles for technical products and technical product documentation - Letter codes - Main classes and subclasses of objects according to their purpose and task— 63 стр.
Industrial systems, installations and equipment and industrial products - Structuring principles and reference designations - Part 2: Classification of objects and codes for classes— 84 стр.
Industrial systems, installations and equipment and industrial products - Structuring principles and reference designations - Part 2: Classification of objects and codes for classes— 84 стр.
