36 صفحه pdf
NFPA 90A:2015
Standard for the Installation of Air-Conditioning and Ventilating Systems
NFPA 90A:2015
36 صفحه pdf
NFPA 90A:2015
Standard for the Installation of Air-Conditioning and Ventilating Systems
شامل 17 استاندارد از Heating,Ventilation,Air Conditioning Cooling & Refrigeration می باشد.