Library Services Circulation Service Reference Service This service provide assistance in finding information, research guidance, and instruction in using both print and electronic resources. Interlibrary Loan Service Items not owned by any CMU campus library can be photocopied from other institutions via the interlibrary loan. This service is available only to students and staff of the Faculty of Associated Medical Sciences. Document Delivery Service Any materials not in the library's collections may be borrowed from any other library on the CMU campus through the document delivery service. Materials that can be checked out via this service are books and audiovisual. Audiovisual Service Audiovisual materials, including videotapes, slides and audio tapes may be used in the library and can be checked out through circulation service.