An instrumental earthquake magnitude scale
| Image |  |
|---|---|
| Description | original article on Richter scale, published January 1935 |
| Author/s | |
| Publication date | January 1, 1935 |
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| Wikipedia link | |
| Access work |
http://resolver.caltech.edu/CaltechAUTHORS:20140804-143558638 |
| Copyright status | |
| Missing/wrong data? | Edit Wikidata item |