Publication

1968 - McKnight & McKnight Pub. Co., Bloomington, Ill, Illinois

Language

English

Word Count

103,500 words, Guess

Page Count

414 pages

Identifiers

Classifications

  • DDC372.3/5
  • LCCT65 .S39

Subjects

Other Editions

  • Teaching children about technology.McKnight & McKnight Pub. Co.1968

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