中文说明：西北地区环境变迁与农业可持续发展研究_王向辉
English Description：
Environmental change and sustainable development of agriculture in Northwest China_ Wang Xianghui
Environmental change and sustainable development of agriculture in Northwest China_ Wang Xianghui
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中文说明：西北地区环境变迁与农业可持续发展研究_王向辉
English Description：
Environmental change and sustainable development of agriculture in Northwest China_ Wang Xianghui西北地区环境变迁与农业可持续发展研究_王向辉.caj