000 - Computer science, information & general works 330 - Economics 370 - Education 380 - Commerce, communications & transportation 600 - Technology 363 - Other social problems & services 7 more ... 320 - Political science 6 333 - Economics of land & energy 6 700 - The arts; fine & decorative arts 6 610 - Medicine & health 5 140 - Specific philosophical schools 4 300 - Social sciences 3 620 - Engineering & allied operations 3 900 - History & geography 3 100 - Philosophy & psychology 2 200 - Religion 2 340 - Law 2 400 - Language 2 410 - Linguistics 2 500 - Natural sciences & mathematics 2 551 - Geology, hydrology & meteorology 2 576 - Genetics & evolution 2 581 - Specific topics in natural history 2 720 - Architecture 2 780 - Music 2 160 - Logic 1 170 - Ethics 1 304 - Factors affecting social behavior 1 361 - Social problems & social welfare in general 1 630 - Agriculture & related technologies 1 657 - Accounting 1 658 - General management 1 see all ... less ...

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Directory of Open Access Books

Lytras, Miltiadis 2 Albrecht, Jochen 1 Azevedo, Susana Garrido 1 Bao, Haijun 1 Felden, Carsten 1 González-Vila Puchades, Laura 1 more ... Koschtial, Claudia 1 Köhler, Thomas 1 Lab, Precarity 1 Luo, Suhuai 1 Matias, João Carlos de Oliveira 1 Mazza, Cristina 1 Mieg, Harald A. 1 Monaro, Merylin 1 Napolitano, Fabio 1 Ochoa, Jorge 1 Ordóñez de Pablos, Patricia 1 Pimentel, Carina 1 Ramasubramanian, Laxmi 1 Rojas De Leon, Deborah 1 Roma, Paolo 1 Seward, Ruhiya Kristine 1 Shaukat, Kamran 1 Shen, Liyin 1 Smith, Matthew L. 1 Visvizi, Anna 1 de Andres Sanchez, Jorge 1 see all ... less ...

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