EN中文
A Case Study on Characteristics and Countermeasures of Environmental Degradation in the Heihe River Basin, Northwestern China
QI Shanzhong, WANG Tao, LUO Fang, LUO Wanyin, GUO Jian
PROGRESS IN GEOGRAPHY . 2004, (1): 30 -37 .  DOI: 10.11820/dlkxjz.2004.01.004