| 其他書名 | Or, Trader's Certain Guide, in Computing the Price, Or Amount of Any Quantity of Goods ... With a Practical Table ... The Second Edition, Corrected. By S. Thomas, ... |
| 出版 | G. Robinson; and T. Slack, in Newcastle, 1771 |
| URL | http://books.google.com.hk/books?id=LveMnQEACAAJ&hl=&source=gbs_api |