| 其他書名 | A Study Based on the Work of the Child-placing Agency of the New York State Charities Aid Association. the placement and supervision of children in free foster homes |
| 出版 | New York School of Social Work, 1921 |
| URL | http://books.google.com.hk/books?id=mBGZPwAACAAJ&hl=&source=gbs_api |