| 其他書名 | A Thesis to the Faculty of the Graduate School of Cornell University in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy, June, 1923 |
| 出版 | Cornell University, 1925 |
| URL | http://books.google.com.hk/books?id=deB7MQEACAAJ&hl=&source=gbs_api |