Every university library has its own database for books and journals.
Consult the online catalog first to see what's available. Sign out those library books and copy those journal articles early on in the process, or you may find some prof has absconded with the only copy of your best source, and good luck getting it back before Christmas.
Profs see enough fluff that they generally smell it a mile away. Unfortunately, librarians are merely human, working long thankless hours for low pay, so a little patience on your part will go a long way.
Kind of like a sixth sense, or a really obscure super power. Remember that most of the interface you deal with aren't really librarians, they're student workers, clerical staff, or whoever else could be dragooned into helping to fill the long hours on the firing line.
Or some bozo has neatly cut out every article on your hot topic (which, by an odd coincidence, was the hot topic for thirty other students just last semester). If you have a specific title or author, it's pretty easy to type it in an online catalog or database, and see what happens.
But most of the time, what you have is a genuinely fuzzy idea, and that's where keyword searches come in real handy.
So a search on alligators turns up everything from wildlife to recipes.
Make sure you read the search screen for the online system you are using, because many online indexes and catalogs ask you to click on Keyword Search or something similar, before sending the surfer in search of the prize. Some Hot Tips To Enhance Your Quest For Fire: Try using a little logic - Boolean logic, that is. Most online indexes use some version of Boolean searching.
I'd much rather have a paper that says a lot about a little, than a paper that says a little about a lot. Generalize to similar or related topics (cloning of humans vs.
cloning of animals, unexpected social problems that might result from cloning, technical aspects of cloning, moral or religious issues related to cloning, cloning my girlfriend or boyfriend, etc.). Otherwise, those interesting related issues you delved into might end up looking like window dressing, added only to bring the paper up to its required minimum length. A good library always has a good professional staff, trained to be courteous and helpful, and bright enough to genuinely care about a LOT of topics, and who will expertly direct your search to the right place.