| ID | 035621 |
| Call Number | 031/COR |
| Title Proper | The encyclopedia American : vol.21 Orley to photographic telescope. |
| Language | ENG |
| Author | Cornish George A. editor |
| Edition Statement | Vol.121. |
| Publication | New York, Americana COrporation, 1968. |
| Description | 800p. |
| Classification Number | 031 |
| Key Words | Encyclopedias and dictionaries ; Knowledge,books of ; Reference books |