Notebook of data on salt skins
| Image |  |
|---|---|
| Description | 1911-1912 | Smithsonian Institution Archives |
| Author/s |
author: Edmund Heller |
| Publication date | 1912 |
| Language | English |
| Country of origin | |
| Wikipedia link | |
| Access work | |
| Copyright status |
public domain in United States. public domain in countries with 70 years pma or shorter. |
| Missing/wrong data? | Edit Wikidata item |