If you want to find a specific journal, search the Journals List by journal title. Older citations may be available hard copy in the library, if not available electronically.
If the journal title is not found on the libraries' journal list, you may order a copy of the article via Interlibrary Loan. (How do I sign up for Interlibrary Loan?)
PubMed is the National Library of Medicine's search interface that allows searching of the extensive Medline database. Currently, Medline contains over 19 million citations from medicine, nursing, allied health, public health, dentistry, pharmacy, veterinary medicine, the health care system, health administration, and the pre-clinical sciences.