Library catalogs list books and journals, including full text electronic books and journals, but not individual journal articles. To find journal articles, use an online database. EUCLID is Emory's catalog. Other Library Catalogs are available from the General Libraries webpage.
Among the most useful is Worldcat which includes most of the libraries in the U.S.
ARCHE, GETS, and Interlibrary loan (ILL)-- If Emory does not have the item you want and you don't want to wait two or three weeks for interlibrary loan, you can check to see if nearby university libraries in the ARCHE or GETS consortia have the item; you can borrow from them directly. Otherwise, you can submit ILL requests online through EUCLID for materials we don't own. You can borrow books and get photocopies of articles usually for free.