| 其他書名 | A Thesis Presented to the Faculty of the Department of Social Studies, Millersville State College, in Partial Fulfillment of the Requirements for the Degree Master of Education |
| 出版 | Millersville State College, 1966 |
| URL | http://books.google.com.hk/books?id=Nn6pNwAACAAJ&hl=&source=gbs_api |