<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> Articles in economics journals are usually classified according to the JEL classification codes, a system originated by the Journal of Economic Literature . The JEL is published quarterly by the American Economic Association (AEA) and contains survey articles and information on recently published books and dissertations . The AEA maintains EconLit, a searchable data base of citations for articles, books, reviews, dissertations, and working papers classified by JEL codes for the years from 1969 . A recent addition to EconLit is indexing of economics - journal articles from 1886 to 1968 parallel to the print series Index of Economic Articles . </P> <Dl> <Dt> There are 20 primary JEL categories </Dt> <Dd>: </Dd> </Dl>

Journal of economic literature (jel) classification number
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