WHERE IS A RESEARCH FRONTIER

被引：56

作者：

ACKERMAN, EA

机构：

来源：

关键词：

D O I：

10.1111/j.1467-8306.1963.tb00458.x

中图分类号：

P9 [自然地理学]; K9 [地理];

学科分类号：

0705 ; 070501 ;

摘要：

引用

页码：429 / 440

页数：12

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[3]

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[4]

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[5]

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[7]

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[9]

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[10]

DARWIN CR, 1845, COMMUNICATION