320 - Political science 370 - Education 380 - Commerce, communications & transportation 610 - Medicine & health 600 - Technology 7 000 - Computer science, information & general works 6 more ... 700 - The arts; fine & decorative arts 6 333 - Economics of land & energy 5 330 - Economics 4 363 - Other social problems & services 4 900 - History & geography 4 551 - Geology, hydrology & meteorology 3 400 - Language 2 720 - Architecture 2 100 - Philosophy & psychology 1 140 - Specific philosophical schools 1 170 - Ethics 1 300 - Social sciences 1 304 - Factors affecting social behavior 1 360 - Social problems & services; associations 1 414 - Phonology & phonetics 1 500 - Natural sciences & mathematics 1 540 - Chemistry & allied sciences 1 581 - Specific topics in natural history 1 620 - Engineering & allied operations 1 658 - General management 1 see all ... less ...

English

Directory of Open Access Books 9

Bao, Haijun 2 Ochoa, Jorge 2 Shen, Liyin 2 Abelha, Marta 1 Batra, Kavita 1 Chaves-Montero, Alfonso 1 more ... Fernandes, Sandra Raquel Gonçalves 1 Ferreira-Oliveira, Ana Teresa 1 Goniewicz, Mariusz 1 Hashemi, Shervin 1 Huys, Isabelle 1 Seward, Ruhiya Kristine 1 Sharma, Manoj 1 Simoens, Steven 1 Smith, Matthew L. 1 Vulto, Arnold G. 1 see all ... less ...

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