门户城市
参考资料
- 全国科学技术名词审定委员会. . 北京: 科学出版社. 2006. ISBN 9787030176264.
- 周一星. . 北京: 商务印书馆(2003)ISBN 7100015235.
- AF Burghardt. . Annals of the Association of American Geographers. 1971.
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