Where could i find the author and title of three entries found under the subject aids?

You can search items in Helsinki, Espoo, Vantaa and Kauniainen city libraries' common bibliographics database Plussa http://www.libplussa.fi/#en Select the search type for subject heading and type aids. Also select display material in english.

Here are some examples Duesberg, Peter: AIDS--the good news is HIV doesn't cause it. Rimer, Robert A.: HIV+--working the system. Johnson, Earvin: What you can do to avoid AIDS.