Evaluative research : principles and practice in public service & social action programs /
| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
New York :
Russell Sage Foundation,
1967.
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| Subjects: |
| Physical Description: | ix, 186 pages : illustrations ; 24 cm. |
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| Bibliography: | Includes bibliographical references and index. |