| 其他書名 | The Report of a Conference Held at Wingspread, Racine, Wis., Under the Auspices of the Midwest University Committee in Cooperation with the Johnson Foundation. ... |
| 出版 | University Extension Division, 1965 |
| URL | http://books.google.com.hk/books?id=-sZWAAAAMAAJ&hl=&source=gbs_api |