1. Postal services. DPM infrastructure. Messages supporting DPM applications. (24th April 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (48 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Mail processing machines. Specification for minimum information to be included in specification sheets of postal franking machines Part 4, (31st December 1984) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗