| 其他書名 | An Address by Edwin Wolf, 2nd Librarian the Library Company of Philadelphia |
| 出版 | Drexel Library school series number two Drexel Institute of Technology Philadelphia 4, Pennsylvania, 1959 |
| URL | http://books.google.com.hk/books?id=zZmjnQAACAAJ&hl=&source=gbs_api |