GEOGRAPHICAL RESEARCH >
2002 , Vol. 21 >Issue 6: 741 - 741
DOI: https://doi.org/10.11821/yj2002060010
Online published: 2002-12-15
Wu Peilin . [J]. GEOGRAPHICAL RESEARCH, 2002 , 21(6) : 741 -741 . DOI: 10.11821/yj2002060010
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