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водохозяйственная система stresses
ecol.	water economy system; water resources utilization system; water supply system; water utilisation scheme
geogr.	water economy
hydr.	project; scheme; water management system
Makarov.	water resources; water utilization system
tech.	hydrologic system; multipurpose water-resources scheme; water system; water-management system; water-resources system; waterworks facility; waterworks; multipurpose water resources scheme

водохозяйственная система: 44 phrases in 6 subjects

Ecology	2
General	2
Hydraulic engineering	8
Makarov	4
Natural resourses and wildlife conservation	2
Technology	26