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тематика/ключевые слова |
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pollution of water bodies [1] |
polyethylene [1] |
pool heating [1] |
postgraduate studies [4] |
poultry farming [1] |
power engineering [43] |
power lines [1] |
power plants [3] |
power supply [1] |
power usage [2] |
precipitation of the base [1] |
prefabricated concrete structures [1] |
preliminary survey [1] |
preservation of historical and cultural heritage [1] |
pricing [1] |
production areas [1] |
production noise [1] |
production of building materials [1] |
professional education [1] |
professional training [3] |