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Dale, Edgar, and Chall.Jeanne S. A Formula for Predicting Readability. Educational Research Bulletin, Ohio State University, Columbus, Ohio. Jan. 21, 1948.
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Farr, James N. , and Jenkins, James J.Tables for Use with the Flesch Readability Formulas. Journal of Applied Psychology, 33, 3, 1949.
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Flesch, Rudolf.A New Readability Yardstick. Journal of Applied Psychology, 32, 3, 1948.
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Knutson, Andie L.Evaluating APHA Exhibits. American Journal of Public Health, 39, 8, 1949. Reprinted in Health Education Journal, Jan. 1954.
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Knutson, Andie L. Evaluating Health Education. Public Health Reports, 67, 1, 1952.
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Knutson, Andie L.Pretesting: A Positive Approach to Evaluation . Public Health Reports, 67, 7, 1952.
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Knutson, Andie L.Pretesting Health Education Materials. American Journal of Public Health, 43, 2, 1953. Reprinted in Health Education Journal, April 1954.
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Public Health Service, Washington 25, D.C.Pretesting and Evaluating Health Education: Public Health Monograph No. 8, Public Health Service Publication No. 212. Jan. 1953.
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Shimberg, Benjamin.Pretesting a Nutrition Filmstrip, in Pretesting and Evaluating Health Education, Public Health Monograph No. 8, Public Health Service Publication No. 212, Jan. 1953.
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Shimberg, Benjamin , and Harris, Jane S.Evaluating a Nutrition Education Program . Ibid.
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