The General Library provides copy services for library users. The mayority of the photocopy machines are conveniently located on the second floor of the General Library building, in the Puerto Rican Collection, in the Alvarez Nazario Collection and in the Reference/Documents Collection. They operate on coin box and copy cards. All the machines accept $1 and $5 bills. In addition, two change machines are located on the second floor, near the principal photocopy area. Copy cards may be purchased in a machine placed near the photocopy machines for $1.00. Once you buy a copy card, you have to insert it in the photocopy machine with the amount of money you want to use for photocopies. After this, your copy card is ready to be used. The copy cards are reusable. In addition, microform reader/printers are available at the Serials and Electronic Resources, Reference/Documents, and Puerto Rican collections.