| 其他書名 | Their character and historical development. By Friedrich Paulsen. Authorized translation by Edward Delavan Perry. With an introduction by Nicholas Murray Butler |
| 出版 | Macmillan and Company, 1894 |
| URL | http://books.google.com.hk/books?id=3h-cTZy-h8cC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |