Llwytho...
Scientific social surveys and research: background, content, methods, principles, and analysis of social studies /
Prif Awdur: | |
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Awduron Eraill: | |
Fformat: | Printed Book |
Cyhoeddwyd: |
New Delhi :
Prentice Hall of India;
1984.
|
Rhifyn: | 4 th ed.. |
Pynciau: |