The UCF Libraries builds collections that support the teaching and research mission of UCF. The goal is to build breadth and depth in the various UCF-supported disciplines while taking into account two key factors – funding and space. These factors weigh in the decision by the Libraries to purchase textbooks very judiciously. There are so many different textbooks used at UCF each semester that funding prohibits purchasing them all, so high enrollment courses with high cost textbooks receive priority. Slightly older editions and/or textbooks for other courses may occasionally be found on Reserve due to donations or because the book has been selected on its merits and not because it is an assigned textbook.