Local coded informarion. This field contains information that is only of local interest, whereas fields #0ca &c contain coded information that is valid universally. The field is not repeatable, but may contain more than one code.
The following codes are those that have been used thus far, some of them not consistently. It is particularly important to use code "a" for collectanea that have not yet been catalogued analytically.
| a | in need of analytic entries |
| c | Christian work by Chinese author |
| e | exhibitable |
| h | periodical holdings piece records incomplete |
| o | pre-modern book |
| p | Protestant missionary publication |
| r | retrospective conversion from card catalogue (Bodleian) |
| s | copy has collectors' seals |
| w | record requires further work |
| z | record created after 1 March 2020 |
#900 a
#900 op