N Economic History
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N Economic History >
N3 Labor and Consumers, Demography, Education, Health, Welfare, Income, Wealth, Religion, and Philanthropy
N3 Labor and Consumers, Demography, Education, Health, Welfare, Income, Wealth, Religion, and Philanthropy
- 总体
- N30 General, International, or Comparative
- N31 U.S. • Canada: Pre-1913
- N32 U.S. • Canada: 1913-
- N33 Europe: Pre-1913
- N34 Europe: 1913-
- N35 Asia including Middle East
- N36 Latin America • Caribbean
- N37 Africa • Oceania
- N30 General, International, or Comparative