Engineering 33 Environmental Sciences & Ecology 12 Automation & Control Systems; Engineering 7 Science & Technology - Other Topics 7 Computer Science 6 Computer Science; Engineering 5 Dentistry, Oral Surgery & Medicine 5 Public, Environmental & Occupational Health 5 Business & Economics 4 Materials Science 4 Biochemistry & Molecular Biology; Chemistry; Polymer Science 3 Cardiovascular System & Cardiology 3 Chemistry 3 Construction & Building Technology 3 Education & Educational Research 3 Life Sciences & Biomedicine - Other Topics; Biotechnology & Applied Microbiology 3 Pharmacology & Pharmacy; Chemistry 3 Social Sciences - Other Topics 3 Social Sciences - Other Topics; Religion 3 Agriculture 2 Arts & Humanities - Other Topics 2 Computer Science; Engineering; Telecommunications 2 Energy & Fuels; Engineering 2 General & Internal Medicine 2 Nutrition & Dietetics 2 Optics 2 Science & Technology - Other Topics; Environmental Sciences & Ecology 2 Business & Economics; Health Care Sciences & Services 1 Chemistry; Electrochemistry; Energy & Fuels 1 Chemistry; Energy & Fuels; Materials Science 1