| 其他書名 | Its Meaning, Characteristics, and Uses as Reflected in Survey Reports from All States, Hawaii, and Alaska |
| 出版 | U.S. Department of Health, Education, and Welfare, Office of Education, 1953 |
| URL | http://books.google.com.hk/books?id=1B640AEACAAJ&hl=&source=gbs_api |