30年来国际“贸易-交通-旅游”(3T)互动的统计分析

杜美龄, 孙根年

STATISTICAL ANALYSIS ON THIRTY YEARS' INTERACTION OF INTERNATIONAL “TRADE, TRANSPORT AND TOURISM”

DU Mei-ling, SUN Gen-nian

人文地理 . 2015, (2): 155 -160 . DOI: 10.13959/j.issn.1003-2398.2015.02.023