| 其他書名 | A Study of Trends at the Middle Level of Education |
| 出版 | Teachers College, Columbia University, Center for Education in Industrial Nations, 1969 |
| 主題 | Education / General |
| ISBN | 05982562029780598256201 |
| URL | http://books.google.com.hk/books?id=v580AAAAMAAJ&hl=&source=gbs_api |