Contributions

  • Dolby, J. L., joint author. - Contributor
  • R & D Consultants Company. - Contributor

Publication

1971 - U.S. Office of Education, Bureau of Research, Washington, District of Columbia

Language

English

Word Count

39,750 words, Guess

Page Count

159 pages

Identifiers

Classifications

  • DDC029.7
  • LCCZ699 .R46

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