The influence of mechanical guidance upon maze learning /

by Koch, Helen Lois, 1895-, Koch, Helen Lois, 1895-, Koch, Helen Lois, 1895-
Published 1923

Collected papers in child psychology

by Koch, Helen Lois, 1895-, Koch, Helen Lois, 1895-

The relation of certain formal attributes of siblings to attitudes held toward each other and toward their parents /

by Koch, Helen Lois, 1895-, Koch, Helen Lois, 1895-
Published 1960

Some personality correlates of sex, sibling position, and sex of sibling among five- and six-year-old children,

by Koch, Helen Lois, 1895-, Koch, Helen Lois, 1895-
Published 1955

The influence of mechanical guidance upon maze learning /

by Koch, Helen Lois, 1895-, Koch, Helen Lois, 1895-
Published 1923

Attitudes of young children toward their peers as related to certain characteristics of their siblings

by Koch, Helen Lois, 1895-, Koch, Helen Lois, 1895-
Published 1956

A study of the test-performance of American, Mexican, and Negro children,

by Koch, Helen Lois, 1895-, Koch, Helen Lois, 1895-, Koch, Helen Lois, 1895-, Simmons, Rietta
Published 1926

The relation of certain formal attributes of siblings to attitudes held toward each other and toward their parents /

by Koch, Helen Lois, 1895-
Published 1979

Koch, Helen L, Papers,

by Koch, Helen Lois, 1895-

Twins and twin relations,

by Koch, Helen Lois, 1895-, Koch, Helen Lois, 1895-, Koch, Helen Lois, 1895-, Koch, Helen Lois, b. 1895
Published 1977

A study of the nature, measurement, and determination of hand preference

by Koch, Helen Lois, 1895-, Koch, Helen Lois, 1895-, Koch, Helen Lois, 1895-, Koch, Helen Lois, b. 1895
Published 1933

The relation of certain formal attributes of siblings to attitudes held toward each other and toward their parents

by Koch, Helen Lois, 1895-, Koch, Helen Lois, b. 1895
Published 1960

Texas educational survey report ... Texas educational survey commission

Published 1924

Texas educational survey report ... Texas educational survey commission

by Brooks, Thomas Dudley, 1862-, Creager, John Oscar, 1872-1943, Favrot, Leo Mortimer, 1874-1949, Frost, Norman, 1887-, Hill, Clyde M (Clyde Milton), 1886-1965, Kelly, F. L., Parsons, Andrew Clarkson, 1881-, Petėrson, Ė. A., Simmons, Rietta, Tennant, J. L (John Leslie), 1881-1954, Wilson, H. B (Harry Bruce), 1874-1932, Zook, George Frederick, 1885-1951
Published 1924