Wallace Online Bibliographical Database
| Identifier: | S502a |
| Date: | 1894.09.29 |
| Concise reference: | Wallace, A. R. 1894. The Fourth Dimension. Light 14 (716): 467. |
John van Wyhe, ed. 2012-. Wallace Online (http://wallace-online.org/) 
| Identifier: | S502a |
| Date: | 1894.09.29 |
| Concise reference: | Wallace, A. R. 1894. The Fourth Dimension. Light 14 (716): 467. |
John van Wyhe, ed. 2012-. Wallace Online (http://wallace-online.org/)