Systems of frequency curves Elderton, William Palin Sir 1877-1962 creator Johnson, Norman Lloyd joint author. text bibliography enk London Cambridge U.P. 1969 monographic eng
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viii, 216 p. 24 cm. William Palin Elderton and Norman Lloyd Johnson. Based on the 4th ed. of Elderton's Frequency curves and correlation. Bibliography: p. 202-205. Frequency curves QA273 .E5 1969 519.1 ELS Frequency curves and correlation Elderton, William Palin, Sir 1877-1962 0521073693 69010571 DLC 691009 20150413094702.0 2179437