| 其他書名 | Data from the National Survey of Family Growth. Series 23 |
| 出版 | U.S. Department of Health, Education, and Welfare, Public Health Service, National Center for Health Statistics, 1977 |
| URL | http://books.google.com.hk/books?id=TQw6w7BkSNoC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |