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Medical Call Numbers

The UD Library uses the Library of Congress Classification System to arrange books and print journals on the shelves. This system uses letters and numbers to complete the Call Number. A call number is like an address: it tells us where the book is located in the library.

To find information on the following subjects see the designated call numbers:


R - Medicine, General   RA - Public Aspects of Medicine

RB - Pathology

RC - Internal Medicine RD - Surgery RE - Ophthalmology
RF - Otorhinolaryngology (ENT) RG - Gynecology & Obstetrics RJ - Pediatrics
RK - Dentistry RL - Dermatology RM - Therapeutics, Pharmacology
RS - Pharmacy RT - Nursing RV - Botanic, Thomsonian, and eclectic medicine






RD99 - RD99.35- Surgical Nursing
RE88 - Ophthalmic Nursing
RJ245 - RJ247 Pediatric Nursing
RT1 - RT120 Nursing (General)
RT89-RT120 Specialties in Nursing

Library of Congress - Medical Call Number Range Information


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Interlibrary Loan

Interlibrary Loan service is available to University of Delaware faculty, students, and staff. If you are a University of Delaware user and have any questions concerning Interlibrary Loan services available through the University of Delaware Library, please go to the section on ILL Policies and Information.

Please check DELCAT to verify library holdings before submitting an Interlibrary Loan request. ILL requests will not be processed if requested materials are available in any University of Delaware Library collection.

Log in to the University of Delaware Interlibrary Loan System