N1 Macroeconomics and Monetary Economics; Growth and Fluctuations
- N10 General, International, or Comparative
- N11 U.S.; Canada: Pre-1913
- N12 U.S.; Canada: 1913– (1)
- N13 Europe: Pre-1913
- N14 Europe: 1913–
- N15 Asia including Middle East
- N16 Latin America; Caribbean
- N17 Africa; Oceania