| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Principles of Check Figure Systems for Accountants and Bookkeepers: With Numerous Devices for Quickly Obtaining the Check-Figure of Pounds, ... And Special Hints for Discovering Errors | 978-O-266-24236-9 (O-266-24236-7) | 2018 |
G. H. H. · George Hay · H.H.