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- 74609252 contributor B2551715.
- 74609252 created "1969.".
- 74609252 date "1969".
- 74609252 date "1969.".
- 74609252 dateCopyrighted "1969.".
- 74609252 description "Bibliography: p. 232-247.".
- 74609252 extent "ii, 247 p.".
- 74609252 issued "1969".
- 74609252 issued "1969.".
- 74609252 language "eng".
- 74609252 publisher "Washington,".
- 74609252 subject "371.3".
- 74609252 subject "Educational innovations.".
- 74609252 subject "LB1043 .A45".
- 74609252 subject "Teaching Aids and devices.".
- 74609252 title "To improve learning; a report to the President and the Congress of the United States.".
- 74609252 type "text".