| 其他書名 | A Compact, Bibliographic Distinction Between the Question Answering Systems and Literature Searching Systems. Council of Planning Librarians. Exchange bibliography no. 500 |
| 出版 | Council of Planning Librarians, 1973 |
| URL | http://books.google.com.hk/books?id=QdYXtQEACAAJ&hl=&source=gbs_api |