| 其他書名 | The why and how of the Two-child Family |
| 出版 | Parents' Magazine Press, 1970 |
| 主題 | Social Science / Sociology / Marriage & FamilySocial Science / Abortion & Birth Control |
| ISBN | 08193039689780819303967 |
| URL | http://books.google.com.hk/books?id=RYFqAAAAMAAJ&hl=&source=gbs_api |