Air conditioners, liquid chilling packages, heat pumps, process chillers and dehumidifiers with electrically driven compressors. Determination of the sound power level. Part 1. Air conditioners, liquid chilling packages, heat pumps for space heating and cooling, dehumidifiers and process chillers
System of standards on information, librarianship and publishing. Presentation of cards tor catalogues and files. Catalogization in publications. Content, structure and publishing presentation of data
