Deep Web Search
The screen-shot below illustrates the results delivered after the mechanical engineering was entered and the Go button clicked.
As you can see, twenty results were returned. Notice that the top two are marked with a green dollar sign. If the researcher would have selected the free option instead of accepting the default all in the Resource Access category, only eight results would have been returned. The other twelve turn out to be fee-based access only.
You will find that access to the journals and database resources of highly specialized fields are often fee-based. Because of this, and for the benefit of their faculty and students, many university libraries subscribe to them. If you experience any difficulty or have questions regarding the resources your library subscribes to, ask your librarian for help.
Go ahead on your own and explore the drop-down menus in the different option categories to get a feel for how a Deep Search works.
