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тематика/ключевые слова |
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ecological state [3] |
ecological state of reservoirs [1] |
ecological status [2] |
ecological system [2] |
ecological tourism [4] |
ecology [139] |
ecology, combustible VER [1] |
econometrics [4] |
economic activities [1] |
economic activity [2] |
economic analysis [7] |
economic and mathematical modeling [1] |
economic and social aspects [2] |
economic behavior [1] |
economic calculation [1] |
economic control [1] |
economic crimes [1] |
economic crisis [6] |
economic culture [1] |
economic cycles [1] |