Person
Walker, Helen M. (Helen Mary), 1891-1983
Catalogue
- Books
Studies in the history of statistical method : with special reference to certain educational problems / by Helen M. Walker.
Walker, Helen M. (Helen Mary), 1891-1983.Date: 1929- Books
Studies in the history of statistical method : with special reference to certain educational problems / by Helen M. Walker.
Walker, Helen M. (Helen Mary), 1891-1983.Date: 1931 [©1929]