140 - Specific philosophical schools 320 - Political science 363 - Other social problems & services 380 - Commerce, communications & transportation 700 - The arts; fine & decorative arts 14 600 - Technology 11 more ... 000 - Computer science, information & general works 10 330 - Economics 8 333 - Economics of land & energy 7 900 - History & geography 7 576 - Genetics & evolution 6 581 - Specific topics in natural history 5 620 - Engineering & allied operations 5 720 - Architecture 5 340 - Law 4 551 - Geology, hydrology & meteorology 4 610 - Medicine & health 4 304 - Factors affecting social behavior 3 361 - Social problems & social welfare in general 3 370 - Education 3 500 - Natural sciences & mathematics 3 200 - Religion 2 414 - Phonology & phonetics 2 800 - Literature & rhetoric 2 301 - Sociology & anthropology 1 336 - Public finance 1 550 - Earth sciences 1 580 - Plants (Botany) 1 657 - Accounting 1 658 - General management 1 see all ... less ...

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Directory of Open Access Books

Kim, DaeEun 3 Stončikaitė, Ieva 2 Vidovićová, Lucie 2 Yigitcanlar, Tan 2 Batra, Kavita 1 Chen, Jie 1 more ... Gan, Muye 1 Gómez, Víctor Alonso 1 Gómez-Losada, Álvaro 1 Halkos, George 1 Hernández-Callejo, Luis 1 Kamruzzaman, Md 1 Leite, Vicente 1 Lytras, Miltiadis 1 Ma, Li 1 Marston, Hannah R. 1 Nesmachnow, Sergio 1 Neto, Belmira Almeida Ferreira 1 Ordóñez de Pablos, Patricia 1 Pires, José Carlos Magalhães 1 Rocha, Ada Margarida Correia Nunes Da 1 Shan, Zhengying 1 Sharma, Manoj 1 Zhang, Ting 1 Zhang, Yingnan 1 Zhou, Qian 1 van Hoof, Joost 1 see all ... less ...

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