330 - Economics 500 - Natural sciences & mathematics 620 - Engineering & allied operations 700 - The arts; fine & decorative arts 600 - Technology 15 900 - History & geography 12 more ... 333 - Economics of land & energy 10 000 - Computer science, information & general works 7 576 - Genetics & evolution 5 140 - Specific philosophical schools 4 340 - Law 4 380 - Commerce, communications & transportation 3 300 - Social sciences 2 320 - Political science 2 363 - Other social problems & services 2 370 - Education 2 400 - Language 2 414 - Phonology & phonetics 2 658 - General management 2 100 - Philosophy & psychology 1 530 - Physics 1 540 - Chemistry & allied sciences 1 580 - Plants (Botany) 1 610 - Medicine & health 1 630 - Agriculture & related technologies 1 720 - Architecture 1 780 - Music 1 see all ... less ...

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Directory of Open Access Books

Egea, Jose A. 2 García, Míriam R. 2 Vilas, Carlos 2 Antonelli, Dario 1 Antosz, Katarzyna 1 Antuchevičienė, Jurgita 1 more ... Danielewicz, Jan 1 Dulf, Eva H. 1 Gabbar, Hossam A. 1 Gao, Zhiwei 1 Gaver, Bill 1 Kazimieras Zavadskas, Edmundas 1 Kuh, George 1 Li, Mingheng 1 Loots, Sonja 1 Machado, Jose 1 Massoudi, Mehrdad 1 Mazurkiewicz, Dariusz 1 Muresan, Cristina I. 1 Rajski, Krzysztof 1 Sarkar, Biswajit 1 Sarkar, Mitali 1 Sengers, Phoebe 1 Strydom, Francois 1 Sun, Hui 1 Szurgacz, Dawid 1 Sætra, Henrik Skaug 1 Turskis, Zenonas 1 Yurish, Sergey Y. 1 Zhironkin, Sergey 1 see all ... less ...

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