Engineering & Applied Sciences 8,515 Computer Science 5,763 History 5,666 Management 3,849 Education 3,812 Business & Economics 3,676 Economic conditions 3,419 Ciencias sociales 3,151 Development 3,036 Educación 2,777 Economic policy 2,740 Application software 2,363 Technology 2,315 Social Science 2,290 Philosophy 2,143 Electrical & Computer Engineering 2,114 Tecnología 2,090 RELIGION 2,048 Science 1,928 Data processing 1,879 Computer networks 1,875 Psychology 1,800 Derecho 1,798 Medicine 1,785 FICTION 1,675 Medicina 1,649 Historia 1,644 Telecommunications 1,635 Psicología 1,632 Social aspects 1,606