950 - History of Asia 23,645 查看记录 920 - Biography, genealogy, insignia 19,121 查看记录 910 - Geography and travel 7,506 查看记录 930 - History of ancient world to ca. 499 5,810 查看记录 900 - History & geography 4,078 查看记录 940 - History of Europe 3,254 查看记录 970 - History of North America 993 查看记录 960 - History of Africa 338 查看记录 980 - History of South America 102 查看记录 990 - History of other areas 59 查看记录 300 - Social sciences 10 查看记录 290 - Other religions 2 查看记录 320 - Political science (Politics and government) 2 查看记录 330 - Economics 2 查看记录 390 - Customs, etiquette, folklore 1 查看记录 700 - The arts 1 查看记录 790 - Recreational and performing arts 1 查看记录 820 - English & Old English literatures 1 查看记录