| Characteristic | Share of respondents |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
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Sources
Release date
July 2014
Region
United States
Survey time period
May 2014
Special properties
among authors and publishers
Supplementary notes
The source does not provide survey data (number of respondents, type of survey used).
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