Japan 100 Production and operations management--Product management 87 History 41 Foreign relations 30 Tohoku Mathematical Journal 25 China 24 Soviet Union 16 Economic development 15 Great Britain 13 India 12 United States 12 Economic conditions 11 Economic relations 11 Europe 11 Africa 10 Commonwealth of nations 10 Middle East 10 Nonalignment 10 Religion 10 SAARC 10 South Asian Association for Regional Co-operation 10 International relations 9 Congresses 8 Economics 8 Buddhism Japan 7 Civilization 7 Encyclopaedia Buddhism 7 Foreign policy 7 Social aspects 7 Agriculture 6