| A | B |
| publisher | a person or body that issues copies of a book or other item to the public |
| realia | 3-dimensional objects |
| recto | right hand page of an open book |
| reference | a direction from one heading or entry to another |
| roman numeral | a number like i, iii, vi, x |
| scale | the ratio of distances on a map |
| serial | publication issued in successive parts and intended to be continued indefinitely |
| series | A number of works that have a collective series title as well as individual titles |
| shared responsibility | Collaboration between 2 or more people in creating a work |
| specific material designation | SMD specific class of material - slide for example |
| shelf list | Record of all the items in the library in the order in which they are shelved |
| spine | The part of a book's cover that holds the front and back together |
| standard number | ISBN, ISSN or other number that identifies the item uniquely |
| statement of responsibility | Statement from the item which describes the person responsible for the content of the item |
| subfield | part of a MARC field |
| subfield code | 2 character code, such as $a the precedes the subfield data |
| subfield delimiter | Character used in subfield code, such as $ or | |
| tag | Label that identifies each field of a MARC record, such as 245 for title field |
| subtitle | parts of a title other than the title proper |
| uniform title | Title chosen to id an item which has had different titles; or title used to distinguish a serial title from other serial titles |