期限(时间)
计算机科学
计量经济学
经济
量子力学
物理
标识
DOI:10.1177/002224296402800307
摘要
What are the conceptual properties of a trading area? What is the definition of the term? What testable propositions are currently available to validate its properties and thus give precision to the definition? This article gives answers to these questions.
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