Instructional product development.
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          | Other Authors: | , | 
|---|---|
| Format: | Book | 
| Language: | English | 
| Published: | New York :
          Van Nostrand,
    
        c1971. | 
| Subjects: | |
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| Physical Description: | xxiii, 264 p. | 
|---|---|
| Bibliography: | Includes bibliographical references and index. |