Why specific over general?
Why use a specialized category that may not have full-text when you could use a general index and print out your articles?
While you will find articles on a lot of topics in a general index, the index may not include citations from nearly the number of journals on your topic that are in a specialized index.
You may not get as many results in the specialized indexes, but you'll probably have more quality articles from which to choose.
LIKE TO SEE what this search looks like?
> This Unit > Getting Around in GALILEO > A Typical GALILEO Search