| 其他書名 | An Analysis by the Director, National Institutes of Health, November 1977 |
| 出版 | Department of Health, Education, and Welfare, Public Health Service, National Institutes of Health, 1978 |
| URL | http://books.google.com.hk/books?id=1tl9c_Fo1EsC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |