Academic Search Ultimate (EBSCO) till 2020 07 31

Multidisciplinary, full-text database offering a large collection of journals on topics such as animal science, anthropology, astronomy, biology, chemistry, engineering, ethnic and multicultural research, general sciences, geography, geology, law, mathematics, music, pharmaceutical sciences, physics , psychology, religion and philosophy, science and technology, veterinary science, women's studies, zoology and more.

Business Source Ultimate (EBSCO) till 2020 07 31

A full-text database that helps you track business trends and topics across the globe, covering accounting, administration, banking, economics, finance, human resources, management, marketing, and more.

Cambridge Core (Cambridge University Press)

Cambridge Core content is e-books of various disciplines: engineering, mathematics, economics, computer science, physics and astronomy, life sciences, earth, and environmental sciences, history, philosophy, etc.

On this platform you will find the following e-books collections:
Cambridge Elements - are a new concept in academic publishing and scholarly communication, combining the best features of books and journals. They consist of original, concise, authoritative, and peer-reviewed scholarly and scientific research, organized into focused series edited by leading scholars, and provide comprehensive coverage of the key topics in disciplines spanning the arts and sciences.
Textbooks - free access to HTML textbooks are being offered directly to Higher Education institutions.

In this collection, you can find many engineering textbooks.  “Introduction to Quantum Mechanics” (3rd edition, David J. Griffiths, Darrell F. Schroeter) - one of these. This book is a bestseller and one of the most used  English textbooks of quantum mechanics in the world.