Freeman Bibliographical Database
| Identifier: | A5680 |
| Date: | 1868 |
| Concise reference: | [Ridge, Benjamin.] 1868. Principles of organic life. London: Robert Hardwicke. [signed][Darwin Library-Down] |
| Identifier: | A5680 |
| Date: | 1868 |
| Concise reference: | [Ridge, Benjamin.] 1868. Principles of organic life. London: Robert Hardwicke. [signed][Darwin Library-Down] |