| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/200072 |
| Date | 05 1900 |
| Creators | Douglass, A.E. |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | Article |
| Relation | Popular Science Monthly, Vol. LXX, Mars, canals, planetary science, illusion |
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