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=bsWNwVseaB4C&hl=&source=gbs_api |
EBook | FULL_PUBLIC_DOMAIN |