Natural resources science, environment science and ecology are the disciplines at same level.
资源学、环境学、生态学是同一层次的学科。
The natural resources economics is established on the basis of natural resources science and theoretical economics.
资源经济学建立在资源学和理论经济学基础之上。
The natural resources economics is established on the basis of natural resources science and theoretical economics.
资源经济学建立在资源学和理论经济学基础之上。
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