Tables of the probable error of the coefficent of ...

Tables of the Probable Error of the Coefficient of ...

Statistical Methods for Students in Education

Twins: A Study of Heredity and Environment

Exercise Manual in Statistics

Supplementary Educational Monographs

The Estimation of Pupil Ability by Three Factorial Solutions

Statistical Resumé of the Spearman Two-factor Theory

Student Manual of Factor Analysis: An Elementary Exposition ...

A Study in Factor Analysis: the Reliability of Bi-factors ...