David Dunlap Observatory, University of Toronto
| Image |  |
|---|---|
| Description | article |
| Author/s |
author: John F. Heard |
| Publication date | 1951 |
| Language | English |
| Country of origin | |
| Wikipedia link | |
| Access work |
http://articles.adsabs.harvard.edu/full/seri/MNRAS/0111//0000204.000.html |
| Copyright status | |
| Missing/wrong data? | Edit Wikidata item |