In e-book databases you can search for the whole content of a book. More e-book databases you can find in Nelli portal. Titles of most e-books are also searchable in Oula database.
E-books guide contains e.g. instructions for downloading e-books.
Shelf classifications for computer science and information technology you can find in the libguide of information processing science.
In Pegasus Library there are reference books of mechanical engineering including
Useful tools for accessing books: