These are likely to be the best online sources in which to start your language and linguistics research:
Education Index, 1929-2003
Z5813 .E23 | Reference and Fifth Floor
Linguistics Abstracts, 1985-2003
P1 .A1 L5123 | Fourth Floor
Emphasis on theory and practice of general linguistics.
Linguistic Bibliography for the Year ...and Supplement for Previous Years, 1939-1995
Z7001 .P4 | Fifth Floor
Valuable for its worldwide coverage of the field of linguistics.
Language Teaching, 1982-2003
P51 .L33 | Fourth Floor
Search the PSU Library Catalog for articles in selected databases. This screenshot of a journal article citation shows that you can access the article full text by selecting the green link, Online Access. Sign into the PSU Library catalog to access the article. Note that the article can be available in more than one database.