Smith, Karl U. Cybernetic principles of learning and educational design [by] Karl U. Smith [and] Margaret Foltz Smith. - New York, Holt, Rinehart and Winston [1966] - xiv, 529 p. illus. Bibliography: p. 481-516. Subjects--Topical Terms: Cybernetics.Learning, Psychology of.Education Dewey Class. No.: 001.53 / SMI.C