干旱区研究
Study on the Spatial Structure of Tourist Resources in the Three Gorge Area of Yellow River in Gansu Province
WANG Lu-cang, YANG Zhi-peng, WU Rong-wei, ZHANG Ning
Arid Zone Research . 2016, (1): 215 -222 .  DOI: 10.13866/j.azr.2016.01.29