Focus groups theory and practice
| Prif Awdur: | |
|---|---|
| Awduron Eraill: | |
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Newbury Park, Calif.
Sage Publications
c1990.
|
| Cyfres: | Applied social research methods series
v. 20 |
| Pynciau: |


