This field is used mainly in records of Protestant missionary publications, and records the printing process together with the font if typography has been used. The information is coded as follows:
| b | woodblock |
| l | lithography |
| s | stereotype |
| t | typography |
The fonts are coded as follows, and are entered in subfield |f. A typographically printed work may have more than one font:
| d | Dyer |
| b | Beyerhaus |
| l | Legrand |
| c | Cole |
| g | gamble |
#0cp b
#0cp t|fdc