140 - Specific philosophical schools 363 - Other social problems & services 380 - Commerce, communications & transportation 800 - Literature & rhetoric 610 - Medicine & health 5 333 - Economics of land & energy 4 more ... 600 - Technology 4 620 - Engineering & allied operations 4 700 - The arts; fine & decorative arts 4 900 - History & geography 4 300 - Social sciences 3 330 - Economics 3 340 - Law 3 580 - Plants (Botany) 3 720 - Architecture 3 000 - Computer science, information & general works 2 100 - Philosophy & psychology 2 170 - Ethics 2 301 - Sociology & anthropology 2 320 - Political science 2 576 - Genetics & evolution 2 630 - Agriculture & related technologies 2 200 - Religion 1 297 - Islam, Babism & Bahai Faith 1 336 - Public finance 1 361 - Social problems & social welfare in general 1 370 - Education 1 400 - Language 1 551 - Geology, hydrology & meteorology 1 581 - Specific topics in natural history 1 590 - Animals (Zoology) 1 612 - Human physiology 1 658 - General management 1 780 - Music 1 791 - Public performances 1 see all ... less ...

English

Directory of Open Access Books 8

Gonzalez-Aguilera, Diego 2 Rodríguez-Gonzálvez, Pablo 2 Engineer, Altaf 1 Gatto, Andrea 1 Halkos, George 1 Ida, Aletheia 1 more ... Jacobs, Joela 1 Neto, Belmira Almeida Ferreira 1 Rocha, Ada Margarida Correia Nunes Da 1 Sadik-Zada, Elkhan Richard 1 Sternberg, Esther M. 1 see all ... less ...

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