Heat supply, ventilation, air conditioning, gas supply and lightning

UDK: 697.972
Shtym A. S., Tarasova Y. V., Kuzmenko A. S.
CHANGES IN PHYSICAL PROPERTIES OF SNOW IN THE BATTERY NATURAL COLD AIR CONDITIONING SYSTEMS
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UDK: 628.511.1:624.134
Azarov V. N., Novikov V. S., Marinin N. A.
DUST ANALYSIS PASSING TO THE ATMOSPHERE BY THE EARTHWORK OF BULLDOZING KIT AND RIPPER
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