| Characteristic | Trade | STM | College | K-12 | Corporate |
|---|---|---|---|---|---|
| - | - | - | - | - | - |
| - | - | - | - | - | - |
| - | - | - | - | - | - |
| - | - | - | - | - | - |
| - | - | - | - | - | - |
| - | - | - | - | - | - |
| - | - | - | - | - | - |
| - | - | - | - | - | - |
Download
Source
Release date
September 2011
Region
United States
Survey time period
April 2011
Number of respondents
1,350 publishers
Citation formats









