Science & Engineering offers a wide-ranging survey of engineering, environmental studies, natural history, and the physical and biological sciences, and focuses on their practical, ground-level applications
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Literature and Language combines a variety of linguistic, cultural, and literary traditions in a way that allows users to explore and analyze themes and trends from around the world, and are a comprehensive resource for study of literature through time and around the globe.
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Social Sciences covers a broad range of subjects concerned with humanity’s efforts to understand itself and the world. These materials facilitate exploration into humanity’s interpersonal nature across politics, the criminal justice system, business, religion, psychology, public safety, anthropology, education, and studies of the environment and current events.
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There are many other discipline areas, which you can access from the main menu in the link in the top box.