Successful focus groups advancing the state of the art
| Autor principal: | |
|---|---|
| Format: | Llibre |
| Publicat: |
Newbury Park, Calif.
SAGE Pub.
1993.
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| Matèries: |
| Autor principal: | |
|---|---|
| Format: | Llibre |
| Publicat: |
Newbury Park, Calif.
SAGE Pub.
1993.
|
| Matèries: |