| 其他書名 | Bookkeeping, Commercial Arithmetic, Commercial Law, Commercial Practice, Economic Geography, Junior Business Training, Machine Bookkeeping, Machine Calculation, Penmanship, Shorthand, Stenographic Office Practice, Typewriting |
| 出版 | Los Angeles City School District, 1925 |
| URL | http://books.google.com.hk/books?id=_oZefpvHAtoC&hl=&source=gbs_api |