| 其他書名 | With an Introductory Essay, Unground and Freedom, by Nicholas Berdyaev |
| 出版 | University of Michigan Press, 1958 |
| 主題 | Body, Mind & Spirit / MysticismReligion / General |
| ISBN | 04720601719780472060177 |
| URL | http://books.google.com.hk/books?id=d6UNAQAAMAAJ&hl=&source=gbs_api |