提供JEL分类号。以下关于JEL 分类系统和分类号的. 学界广泛采用。该分类方法主要采用开头的一个英文字母与随后的两位阿拉伯数字一起对经济学各部类进行“ 辞 .

JEL分类系统，是美国经济学会《经济文献杂志》（Journal of Economic Literature）所创立的对经济学文献的主题分类系统，并被现代西方经济学界广泛采用。 该分类方法主要采用开头的一个英文字母与随后的两位阿拉伯数字一起对经济学各部类进行“辞书式”编码分类。

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The JEL classification system was developed for use in the Journal of Economic Literature (JEL), and is a standard method of classifying scholarly literature in the field of economics. The system is used to classify articles, dissertations, books, book reviews, and working papers in EconLit, and in many other applications.

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Instant Clearjel is meant for thickening things that won’t be cooked. It begins to thicken the minute it hits a liquid, without any heat being required. It can be heated once, but don’t use it for anything that will be heated twice.

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The guide provides JEL Code application guidelines, keywords, and examples of items within each classification. The "JEL" classification system originated with the Journal of Economic Literature and is a standard method of classifying scholarly literature in the field of economics. It is used in many of the AEA's published research materials.

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