Haggard, Ernest A. Intraclass correlation and the analysis of variance / Ernest A. Haggard ; with an appendix by Hari C. Gupta. - New York : Dryden Press, c1958. - [13], 171p. : ill. ; 22cm. Includes index. Subjects--Topical Terms: Correlation (Statistics)Psychometrics Dewey Class. No.: 519.537 / HAI 1958