Koch, Helen Lois, 1895–
Nationality: Undetermined, possibly
(United States)
Identities and Authority Control
- pdbooks.info ID: 107736
Helen Lois Koch Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
| A study of the test-performance of American, Mexican, and Negro children | 1926 | Author | |||||||
| Texas educational survey report ... Texas educational survey commission. | 1924 | Author | |||||||
