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- ecological agricultural activity 1
- ecological amplitudes 2
- ecological and economic assessment 2
- ecological and economic mechanism 1
- ecological and economic mechanisms 1
- ecological and economic mechanisms for the destruction of lands from water erosion 1
- ecological and economic security 5
- ecological and economic transformations 2
- ecological and epizootic situation 1
- ecological and naturalistic education 1
- ecological aspect 1
- ecological aspects of productivity 1
- ecological aspects of water use 1
- ecological assessment 1
- ecological audit of agroindustrial production 1
- ecological capacity of lands 1
- ecological competence 6
- ecological competence of a specialist 1
- ecological compromise 1
- ecological consciousness 1