Unemployment has been in the news recently, e.g., “Unemployment Rate in US Surging,” “Unemployment Up, Even as Economy Sprouts New Jobs,” and “Unemployment Likely to Keep on Rising.” General works on unemployment are classed in 331.137 Unemployment, e.g., Economics of Unemployment.
Works with geographic treatment of unemployment are classed in subdivisions of 331.1379 Historical, geographic, persons treatment. For example, The Rise of Unemployment in Europe: A Keynesian Approach is classed in 331.13794 Unemployment in Europe (built with 331.1379 plus T2—4 Europe as instructed under 331.1379). Unemployment in Asia is classed in 331.13795 Unemployment in Asia (built with 331.1379 plus T2—5 Asia). Reconciling Workless Measures at the Individual and Household Level: Theory and Evidence from the United States, Britain, Germany, Spain and Australia, which treats unemployment in OECD (Organisation for Economic Co-operation and Development) countries, is classed in 331.1379177 Unemployment in nations belonging to specific international organizations (built with 331.1379 plus T2—177 Nations belonging to specific international organizations).
The number 331.1379 is a displaced standard subdivision, a displaced version of the standard subdivision T1—09 Historical, geographic, persons treatment; it allows area notation to be added directly to the schedule number. The bracketed entry 331[.13709] Historical, geographic, persons treatment, with its do-not-use note, indicates where the displaced standard subdivision is located: “Do not use; class in 331.1379.”
The Manual note T1—093–T1—099 and T2—3–T2—9 Geographic treatment points out: “When area notation from Table 2 is added directly in the schedules, standard subdivisions T1—01–T1—091 can be added without restrictions, e.g., use 365.94405 for periodicals about penal institutions in France.” Out of Work: Unemployment and Government in Twentieth-Century America is classed in 331.1379730904 Unemployment in 20th century United States (built with 331.1379 plus T2—73 United States plus T1—0904 20th century, 1900–1999).